A cylindrical shaped swimming pool has a diameter of 30 feet and a water height of 4.5 feet. How many cubic feet of water is contained in the pool? Use 3.14 for pi. Round your answer to the nearest cubic foot.

3,179.25

Step-by-step explanation:

First you have to find the area of the circle at the top of the pool (A = r²π):

A = 15²π

Simplify:

A = 706.5

Then multiple the area of the circle by the height:

706.5*4.5 = 3,179.25

Round to the nearest cubic foot:

3,179ft

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i