Volumes Practice Test 3

Question : 14 of 40

Marks: +1, -0

How many spherical bullets can be made out of a lead cylinder 28 cm high and with base radius 6 cm, each bullet being 1.5 cm in diameter?

Solution:

Let n be the number of spherical bullets made; then
n ×

4/3 π × ({1.5}/2)^3

π × 6^2 × 28

∴ n =

{36×28×8×3}/{4×1.5×1.5×1.5}

= 1792

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