Question

Two cubes have their volumes in the ratio 1:27 the ratio of tgier surface areas is

Answer 1

Side of small cube=a
Side of large cube=A
according to the question
a³÷A³=1/27
a÷A=cube root1/cube root 3
a÷A=1/3
so,a=1 and A=3
Ratio of the surface area of cubes
=6a²÷6A²
=6×1²÷6×3²
=6×1÷6×9
=6÷54
Dividing by 6
=1÷9
so the ratio of surface area of the cubes =1÷9
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Answer 2

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