Question

The weight of a metal sphere varies directly as the cube of its radius. The weight of a metal sphere of radius 3 cm is 1.02 kg. Calculate the weight of a metal sphere of radius 5 cm.
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Answer 1

Explanation:

is it 5.1?

1cm=1.02

5cm=?

so... I crossed multiplied it

5×1.02=1x

5.1=x