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Purushotham 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

Two cubes each of volume 64 cubic cm are joined end to end. Find the total surface area of the resulting cuboid?

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Sreedevi replied | 4 days ago

T.S.A of cuboid = 2 (lb+bh+lh);Given volume of the cube = 64 cubic cm.
From this we can find the length of the side of the cube by taking the cube root of 64 and it is equal to 4.
Now we have length of the cube = breadth of the cube = height of the cube = 4cm.
On joining 2 such cubes, we get length of the cuboid = 4+4 =8 cm; breadth and height remain same as we are...  more»
T.S.A of cuboid = 2 (lb+bh+lh);Given volume of the cube = 64 cubic cm.
From this we can find the length of the side of the cube by taking the cube root of 64 and it is equal to 4.
Now we have length of the cube = breadth of the cube = height of the cube = 4cm.
On joining 2 such cubes, we get length of the cuboid = 4+4 =8 cm; breadth and height remain same as we are joining the two cubes side by side.
On substituting the values, we get T.S.A = 160 square cm «less

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D

Datta 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the side of the square if the total surface area of a cube is 96 sq. cm?

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Ankit replied | 23 Nov

4 cm.

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H

Hariprasad 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What do you mean by dimensions of any geometrical shapes?

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Chandan replied | 22 Nov

Two geometric shapes that share the same basic shape are called "similar to each other." If both shapes are the same size, they are called "congruent." Geometric shapes can be two-dimensional or flat. They can be three-dimensional, meaning they possess depth and volume.

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Arun 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

The volumes of the two spheres are in the ratio 64 : 27. Find the ratio of their surface areas?

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Ankit replied | 23 Nov

16 : 9.

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T

Tanvi 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the circumference of the circle if its radius is 2r?

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G

Geeta 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the radius of the sphere if a cone is 8.4 cm high and the radius of its base is 2.1 cm. and it is melted and recast into a sphere?

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Harvir 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the curved surface area of a cylinder, if its radius is doubled and height is halved?

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Poonam 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the total surface area of a cone whose radius is r/2 and slant height is 2l?

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P

Prasad 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What number of planks can be stored of dimensions 4 m * 50 cm * 20 cm in a pit which is 16 m long, 12 wide and 4 m deep?

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R

Rakesh 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the length of the longest pole that can be put in a room of dimensions: 10 m * 10 m *5 m?

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C

Chhavi Kumar 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. What is the ratios of the surface areas of the balloon in the two cases?

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Sajjan 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the surface area of the cube if its sides are 45 cm each?

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M

Mayur 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

Is it true that the radius of a cylinder is doubled and height is halved, the volume will be doubled?

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U

Umamahesh 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

How many square metres of canvas is required for a conical tent whose height is 3.5 m and the radius of the base is 12 m?

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H

Harshitha 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

A cylindrical roller 2.5 m in length, 1.75 m in radius when rolled on road was found to cover the area of 5500 sq. m. How many revolutions did it make?

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S

Sujit 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

A shopkeeper has one spherical has one spherical laddoo of radius 5 cm. With the same amount of material, how many laddoos of radius 2.5 cm can be made?

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D

Dhanya 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

A right triangle with sides 6 cm, 8 cm and 10 cm is revolved about the side 8 cm. Find the volume and the curved surface of the solid so formed?

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S

Shobhitha 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

30 circular plates, each of radius 14 cm and thickness 3 cm are placed one above the other to form a cylindrical solid. Find the total surface area?

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A

Abraham 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

Find the longest pole length that can be put in a room of 10 m * 10 m * 5 m dimensions?

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D

Divya 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

A 3 cm thick iron open box is made whose external dimensions are 78 cm * 54 cm * 12 cm. Find the weight of the box if its density is 60 gm/ cubic cm.?

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S

Santosh 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

Find the surface area of a cube whose volume is 216 cubic cm.?

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D

Dinesh 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

Two equal cubes with sides 6 cm are placed one above the other, forming a cuboid. Find the total surface area of the cuboid thus formed?

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Neha 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

Find the curved surface area of a sphere of radius 5.6 cm?

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M

Manoj 02 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Surface Areas

What is the formula of curved surface area of a cylinder having one open end?

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