surface area ofa sphere and cube are equal then find ratio of their volumes
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surface area of sphere =surface area of cube
4πr^2=6a^2
r^2/a^2=6/4π
r/a=√6/4π
volume of spare sphere/ volume of cube= 4/3πr^3 /a^3
4/3π(r/a)^3
4/3π(√6/4π)^3
4/3π(6/4π×√6/4π)
2(√6×7/4×22)
√4×6×7/4×22
ratio=√21/11
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