Mensuration Practice Test 1

Question : 9 of 40

Marks: +1, -0

Find the ratio of the radii of the circle if a ratio of area is 36 : 225.

Solution:

Ratio of the area =

{πr^2}/{πR^2}

{36}/{225}

⇒

r^2/R^2

{36}/{225}

⇒

r/R

6/{15}

2/5

So the required ratio = 2 : 5

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