NiyMegkaylanick8 NiyMegkaylanick8

23-10-2016
Mathematics

contestada

The area of circle b is 36 times greater than the area of circle
a. the radius of circle b is 30. what is the radius of circle a?

Respuesta :

SchooledBoy SchooledBoy

23-10-2016

The radius of circle a is 5

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23-10-2016

Let, area of circle a = a and of b = b

A.T.Q,

36a = b

36a = 30

a = 30/36 = 5/6

πr² = 5/6

r² = 5/6π

r = √5/√6π

You can calculate that further by putting the value of π

Answer Link

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