Question

what is the volume of this rectangular pyramid? 7 mm 9 mm 9 mm cubic millimeters submit

Explanation:

Step1: Calculate the base area

The base is a square with side length \(9\) mm. The area of a square is \(A = s^2\), so \(A=9\times9 = 81\) \(mm^2\).

Step2: Use the volume formula for a pyramid

The volume formula for a pyramid is \(V=\frac{1}{3}Ah\), where \(A\) is the base area and \(h\) is the height. Here \(A = 81\) \(mm^2\) and \(h = 7\) mm. Then \(V=\frac{1}{3}\times81\times7\).
First, \(\frac{1}{3}\times81=27\), then \(27\times7 = 189\).

Answer:

\(189\)