The ratio of the radius of two circles is 3:4 then what is ratio of their areas
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let,
R=3x
r=4x
ans. 9/16
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Answer: 9:16
Step-by-step explanation:
Let the radii be 3x, 4x for any +ve integer X,
Area of first circle =πr2
=π(3x)2
=π×9x2
Area of second circle= πr2
=π(4x)2
=π×16x2
Ratio of areas = 9×πx2/16×πx2
=9/16 or 9:16
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