1.

The volumes of two spheres are in the ratio 27 : 64. What is the ratio of their radii? And the ratio of their surface areas?

Answer»

Ratio of volumes

\(=\frac{4}{3}\pi r^3_1:\frac{4}{3}\pi r^3_2=27:64\)

\(r^3_1:r^3_2=3^3:4^3\)

\(r_1:r_2=3:4\)



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