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Lesson Posted on 08 Jan CBSE/Class 10/Mathematics

Tips To Score Excellent Marks In Maths

Deval Tolia

I am an experienced, qualified tutor with over 10 years of experience in teaching Maths of all boards...

Hello students. Some tips for you all to score excellent marks in Maths: (1) Do not mug up sums and Theorems. Try to understand the concept. (2) Memorise all formulas and identities well. (3) Understand how to apply Theorems, Formulas and Identities. (4) Focus on possibility of same question... read more

Hello students. Some tips for you all to  score excellent marks in Maths:

(1)  Do not mug up sums and Theorems. Try to understand the concept.

(2)  Memorise all formulas and identities well.

(3) Understand how to apply Theorems, Formulas and Identities.

(4)  Focus on possibility of same question being asked  in different way.

(5) Be alert while doing calculations.

 

 

 

 

 

 

 

 

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Lesson Posted on 06 Jan CBSE/Class 10/Mathematics

Area of the Circle

Ramakrishna Dhooli

I have 15 years of experience in 10th level and 6+ years of experience in 12th level.I have taught more...

AREA OF THE CIRCLE The area of a circle is the total space inside the circle. If radius of the circle = r Then, Area of the circle = πr2 sqare units Here, π=22/7=3.14 aproximately Ex:- radius of the circle = r = 14cm Area of the circle = πr2 = (22/7)x14x14 ... read more

AREA OF THE CIRCLE

 

Perimeter of Circle     Perimeter of circle

The area of a circle is the total space inside the circle.

If radius of the circle = r

Then, Area of the circle = πr2  sqare units

Here, π=22/7=3.14 aproximately

Ex:-

radius of the circle = r = 14cm

Area of the circle = πr2

                         = (22/7)x14x14

                         =22x2x14

                         =616 cm2

 

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Lesson Posted on 01 Jan CBSE/Class 10/Mathematics

CIRCUMFERENCE OF THE CIRCLE

Ramakrishna Dhooli

I have 15 years of experience in 10th level and 6+ years of experience in 12th level.I have taught more...

CIRCUMFERENCE OF THE CIRCLE The CIRCUMFERENCE of a circle is the total length of the outer periphery(boundary) of the circle. If radius of the circle = r Then, Circumference of the circle = 2πr units Here, π=22/7=3.14 aproximately Ex:- radius of the circle = r = 35cm Circumference... read more

 

 

CIRCUMFERENCE OF THE CIRCLE

 

Perimeter of Circle     Perimeter of circle

The CIRCUMFERENCE of a circle is the total length of the outer periphery(boundary) of the circle.

If radius of the circle = r

Then, Circumference of the circle = 2πr units

Here, π=22/7=3.14 aproximately

Ex:-

radius of the circle = r = 35cm

Circumference of the circle = 2πr

                         = (22/7)x35

                         =22x 5

                         =110 cm

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Lesson Posted on 01 Jan CBSE/Class 10/Mathematics

PERIMETER OF THE RECTANGLE

Ramakrishna Dhooli

I have 15 years of experience in 10th level and 6+ years of experience in 12th level.I have taught more...

PERIMETER OF THE RECTANGLE:- The perimeter of the rectangle is the total length of the outline of the rectangle. It is nothing but sum of the all the four sides of the rectangle. If Length of the rectangle = l Breadth(width) of the rectangle = b Then , formula... read more

  

PERIMETER  OF THE RECTANGLE:-

The perimeter of the rectangle is the total length of the outline of the rectangle.

It is nothing but sum of the all the four sides of the rectangle.

 

 

   rectangle definition                 Rectangle

If Length of the rectangle = l

  Breadth(width) of the rectangle = b

Then , formula to find the PERIMETER of rectangle is given by

P =2( l + b )  units

 

ex:-

If Length of the rectangle = l = 40 cm

  Breadth(width) of the rectangle = b = 10cm

Area of rectangle (P) =2( l + b )

                           A = 2(40 + 10)

                              = 100 cm  

 

 

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Lesson Posted on 01 Jan CBSE/Class 10/Mathematics

AREA OF THE RECTANGLE

Ramakrishna Dhooli

I have 15 years of experience in 10th level and 6+ years of experience in 12th level.I have taught more...

AREA OF THE RECTANGLE If Length of the rectangle = l Breadth(width) of the rectangle = b Then , formula to find the area of rectangle is given by A = l x b square units ex:- If Length of the rectangle = l = 40 cm Breadth(width) of the rectangle = b = 15cm Area... read more

AREA OF THE RECTANGLE

 

   rectangle definition                 Rectangle

If Length of the rectangle = l

  Breadth(width) of the rectangle = b

Then , formula to find the area of rectangle is given by

A = l x b  square units

 

ex:-

If Length of the rectangle = l = 40 cm

  Breadth(width) of the rectangle = b = 15cm

Area of rectangle (A) = l x b

                           A = 40 x 15

                              = 600 cm2  

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Lesson Posted on 01 Jan CBSE/Class 10/Mathematics

AREA OF THE SEMI CIRCLE

Ramakrishna Dhooli

I have 15 years of experience in 10th level and 6+ years of experience in 12th level.I have taught more...

The area of a semi circle is the total space inside the semi circle. If radius of the circle = r Then, Area of the circle = (1/2)xπr2 sqare units Here, π=22/7=3.14 aproximately Ex:- radius of the circle = r = 14cm Area of the semi circle = (1/2)xπr2 = 1/2(22/7)x14x14 ... read more

 

Perimeter of circle

The area of a semi circle is the total space inside the semi circle.

If radius of the circle = r

Then, Area of the circle = (1/2)xπr2  sqare units

Here, π=22/7=3.14 aproximately

Ex:-

radius of the circle = r = 14cm

Area of the semi circle = (1/2)xπr2

                         = 1/2(22/7)x14x14

                         =11x2x14

                         =308 cm2

 

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Lesson Posted on 24/12/2018 CBSE/Class 10/Science

The Trend of Electron Affinity in Periodic Table

Ramakrishna Dhooli

I have 15 years of experience in 10th level and 6+ years of experience in 12th level.I have taught more...

The electron affinity (Eea) of a molecule or an atom or is the amount of energy spent or released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion. Factors affecting the electron affinity:- 1) Atomic size:- Atomic size increases ELECTRON AFFINITY... read more

 Image result for electron affinity chart

    The electron affinity (Eea) of a molecule or an atom or is the amount of energy spent or released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.

Factors affecting the electron affinity:-

1) Atomic size:- Atomic size increases ELECTRON AFFINITY decreases.

2)Nuclear Charge:- Nuclear Charge ELECTRON AFFINITY increases.

TREND OF The electron affinity  IN PERIODIC TABLE:-

In the period:- In the period from left to right  electron affinity increases because

1) Nuclear Charge increases from left to right in the period.

2)Atomic size decreases

3)Hence In the period from left to right electrons can be easily added thus more elections gets combined means more energy liberates.

In the group: -from top to the bottom electron affinity of elements decreases because-

1)atomic size goes on increases from top to bottom in the same group.

2)Hence attraction force between the nucleus and valence electron decreases.

3) Thus a lesser chance of electrons getting added means minor energy liberation.

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Lesson Posted on 24/12/2018 CBSE/Class 10

Periodic classification of Elements

Sashank Sir

"Education is not preparation for life;it is life itself." I am a qualified and experienced tutor for...

How many elements known to us? Ans: 118 Who gave the theory of triads? Ans: Dobereiner Who gave Octave theory? Ans: Newlands What is the drawback of Dobereiner traits? Only three triads were recognised from the elements known at a time. What is the drawback of Newlands Octave theory? Ans: It... read more

How many elements known to us?

Ans: 118

Who gave the theory of triads?

Ans: Dobereiner 

Who gave Octave theory?

Ans: Newlands

What is the drawback of Dobereiner traits?

Only three triads were recognised from the elements known at a time.

What is the drawback of Newlands Octave theory?

Ans: It applied to calcium, properties of newly discovered elements didn't fit into the law of Octave.

In Mendeleev periodic table how many periods and groups are there?

Ans: 7 periods and eight groups.

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Answered on 27/12/2018 CBSE/Class 10/Science/Unit III: Natural Phenomenon

Whether glucose can be synthesized in Lab?

GRIP Academy

yes why not
Answers 1 Comments
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