Andy’s job is to attach a ladder to a water tank. The water tank
is a 20ft wide cylinder and has a volume of 9,420ft3. If the length
of the ladder is equal to the height of the water tank, how long
is the ladder?
A) 30ft (Correct Answer)
B) 9.5ft
C) 8.9ft
D) 11ft
Explanation:
The water tank is a cylinder with a volume of 9,420ft3. Therefore 9,420 = (?) (r2) (h) = (3.14) (102) (h) = (3.14) (100) h;
h ? 30ft
Related Common Core State Standard: Geometry: 8.G.9
