Acity's water tower is in the shape of a sphere with a radius of 15 feet. if the tank is full, what is the exact value of the volume of the tank?
a 225π ft3
b 450π ft3
c 550π ft3
d 4500π ft3

The trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? a) 48 cm2; 32 cm2; 80 cm 2 b) 48 cm2; 16 cm2; 64 cm 2 c) 128 cm2; 32 cm2; 160 cm 2 d) 128 cm2; 16 cm2; 144 cm 2