A right square pyramid has volume $324\text{ cm}^3$ and height $12$ cm. Find one side of its bas

Question

A right square pyramid has volume $324\text{ cm}^3$ and height $12$ cm. Find one side of its base. Calculate the mass of $4000$ identical steel ball bearings, each of diameter $0.8$ cm, if steel has density $7.85\text{ g/cm}^3$. Use $\pi=3.142$ and give the mass to the nearest gram.

Accepted Answer

(a) $9$ cm; (b) $8419$ g.

Pyramid base length and ball-bearing mass

Pyramid base length and ball-bearing mass

Solution:

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