Pyramid dimensions

Pyramid dimensions

Secondary 2
3 marks
TGM Original Questions

A right square pyramid has volume \(324\text{ cm}^3\) and height \(12\) cm. Find one side of its base.[3]

Solution:

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Answer:Let the base side be \(s\text{ cm}\). \(324=\dfrac13s^2(12)\), so \(s^2=81\). Since a length is positive, \(s=9\text{ cm}\).

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