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Post a LessonAnswered on 10 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 3 Coordinate Geometry/EXERCISE - 9.2
Saurav Mitra
Tutor
Diameter = 1.5 m
Radius (𝑟)=0.75m
Cost per meter = ₹15
Length of lace =Circumference =2pir
=2×3.14×0.75=4.71m
2πr=2×3.14×0.75=4.71m
Cost =4.71×15=
₹70.65
Length of lace required = 4.71 m
Cost = ₹70.65
read lessAnswered on 10 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 3 Coordinate Geometry/EXERCISE - 9.2
Saurav Mitra
Tutor
Answered on 09 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 3 Coordinate Geometry/EXERCISE - 9.2
Saurav Mitra
Tutor
Answered on 09 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 3 Coordinate Geometry/EXERCISE - 9.2
Saurav Mitra
Tutor
Answered on 18 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 1 Number Systems/EXERCISE - 1.3
Sadiq
C language Faculty (online Classes )
We shall look at some examples of rational numbers in the form of p/q (q NOT EQUAL TO 0), where their decimal representations are terminating.
2/5 = 0.4
3/100 = 0.03
27/16 = 1.6875
33/50 = 0.66
Let's observe the denominators of the above rational numbers.
2/5 = 2 / (20 * 51)
3/100 = 3 / (22* 52)
27/16 = 27 / (24 *50)
33/50 = 33 / (21 *52)
We observe that the denominators of the above rational numbers are in the form of 2a * 5b, where a and b are whole numbers.
Hence if q is in the form 2a * 5b then p/q is a terminating decimal.
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