Question

Observe the composite figure below.

The bottom shape is a square prism with base edges of 5 feet and a height of 15 feet. What is the volume of the composite figure if the top shape is a right pyramid with a height of 3 feet?

Answer 1

Somone please help me (:

Answer 2

can you provide a picture of the figure?

Answer 3

yes, one sec!

Answer 4

here it iss.

Answer 5

thx

Answer 6

sorry I don't understand your problem

Answer 7

it's okk :/

Answer 8

You find the volume of each figure separately and add the volumes together.

You can google for the formulas or (presumably) look in your text book.

The volume of a square prism with base edges of 5 feet and a height of 15 feet. is
Volume = area of the base * height
The area of a square with sides=5 is 5*5= 25 sq ft.
So the volume of the square prism is 25 sq. ft * 13 ft
The volume of a pyramid is
\[V= \frac{1}{3}baseArea\cdot height\]
so V= 5*5*3/3= 25 cu ft.
Add the two volumes to get the total