Answer:
V= 3180.87
Step-by-step explanation:
to know radius=
radius*2= diameter
reverse it to find radius
45 feet= radius*2
45 ÷2= radius = 22.5
[tex]V= \pi r^2\frac{h}{3}[/tex] equation to find volume of a cone
[tex]V=\pi 22.5^2\frac{12}{3}[/tex] 12 is from height
V≈ 6361.72512
Rounded V= 6361.73
Tank is half full so divide by 2
6361.73 ÷ 2= 3180.865
Rounded: V= 3180.87
