Answer:
3. 147
4.

Explanation:
3. Volume of a square pyramid =
×

Variables:
V = volume
x = base edge length
h = height
V =
×

x = 7 ft
h = 9 ft
Plug the values in the equation:
V =
×

V = 49 × 3
V = 147

4. Volume of cone =

Variables:
V = volume
r = radius
h = height
V =

r = 8ft /2 = 4 ft (radius is half of the diameter)
h = 10 ft
V =

V =
× 16 ×

V =
