the ratio of radii of two circle is 2:3. find the ratio of their areas.if the area of bigger circle is 3123 sq.cm. find the area of smaller circle
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ratio of areas=(22/7×2x×2x)/(22/7×3x×3x)
=4/9
bigger area of circle=22/7×3x×3x
3123=22/7×9x×x
x×x=3123×7/(22×9)
xsq=337×7/9
xsq=262.11cm
x=16.18cm
area of small circle=22/7×2×2×262.11
=88×262.11/7
=3,295.09
=4/9
bigger area of circle=22/7×3x×3x
3123=22/7×9x×x
x×x=3123×7/(22×9)
xsq=337×7/9
xsq=262.11cm
x=16.18cm
area of small circle=22/7×2×2×262.11
=88×262.11/7
=3,295.09
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