Question

the radius of the rate ready of two circle is 5 radius 3 find the ratio of them circumference

Answer 1

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AryaLi
Secondary SchoolMath 5+3 pts


The ratio of the radii of two circles is 5:3.find the ratio of their circumfrences.
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Follow Report by Aradhyakhushi 05.03.2017
Answers

maria9
Maria9 Ace
let the radii be 5x and 3x

circumference of first circle = 2 pi(5x)
circumference of the second circle
=2 pi (3x)

ratio = 2 pi (5x) /2 pi (3x)
= 5/3


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deepikakvvk06
Deepikakvvk06 Content Quality
Lets take radii of one circle ,r = 5 x
radii of the second circle , R = 3 x

Circumference of the first circle = 2πr = 2π × 5x
= 10πx
Circumference of the second circle = 2πR = 2π × 3x
= 6πx

Therefore , ratio of the circumference of the two circles = 10πx ÷ 6πx
= 10 ÷ 6
= 5 ÷ 3
= 5 : 3