THE RADII OF SPHERE ARE IN THE RATIO 1:2. fIND THE RATIO OF THEIR SURFACEW AREA
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Given,
r1 : r2= 1:2
so ratio of surface areas
= 4pie r1^2 ÷ 4 pier2^2
=r1 square÷ r2 square
= 1 square÷ 2 squares
= 1÷ 4
= 1:4
r1 : r2= 1:2
so ratio of surface areas
= 4pie r1^2 ÷ 4 pier2^2
=r1 square÷ r2 square
= 1 square÷ 2 squares
= 1÷ 4
= 1:4
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