Hi. I have a question. Can I receive help quickly because my homework is due in 1 hour.

Question

The volume V of a rectangular pyramid varies jointly as the area of the base B and the height h. V = 56 m³, when B = 24 m² and h = 7 m. Identify B when V = 81 m³ and h = 9 m.

 

A.) 25 m²

B.) 27 m²

Answer 1

The first sentence tells us that V = k Bh where k is a constant

Using V = 56, B = 24, h = 7, find k

Then knowing k, find B when V = 81, h = 9. ( B = V/kh)