Question

7. A stereo speaker in the shape of a triangular pyramid

has a height of 12 inches. The area of the base of the
speaker is 22 square inches.
What is the volume of the speaker in cubic inches?

Answer 1

88

Explanation:

memorize this formula:

V = 1/3AH

a is base area

h is height

so V = 1/3 *22*12= 88