Two ball bearings made from the same material have masses 64 g and 729 g respectively. - Find the ra

Question

Two ball bearings made from the same material have masses 64 g and 729 g respectively. - Find the ratio of their volumes. - Find the ratio of their radii. - Given that the surface area of the smaller ball bearing is 24 mm², find the surface area of the larger ball bearing.

Accepted Answer

$\text{(i)}\ 64:729$ $\text{(ii)}\ 4:9$ $\text{(iii)}\ 121.5\text{ mm}^2$

Mass, radius and surface-area ratios

Mass, radius and surface-area ratios

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