Question

The ratio of the radius of two circles is 2:3 find the ratio of their areas if the area of the bigger circle is 3123 sq. Cm find the area of the smaller circle

Answer 1

ratio of radius of 2 circles is   2:3

now let the radius be 2x and 3x

ratio of their areas = area of first circle/area of second circle

= πr²/πR²

=r²/R²

=(2x)²/(3x)²

=4x²/9x²

=4/9

∴ratio of their areas = 4:9

hope it helps u

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Answer 2

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