Question

Use the image to answer the question.

An illustration shows a rectangle of unknown height with a circle of radius 3 feet attached to its top left and a circle of radius 3 feet attached to its bottom right.

If the surface area of the net diagram of the right circular cylinder is 395.64 feet2
, find the height of the net diagram. Use 3.14
for π
.

(1 point)
feet

Answer 1

Radius r = 3, so total net area = lateral + 2 bases = (2πr)h + 2πr^2.
With π = 3.14: 18.84h + 56.52 = 395.64 → 18.84h = 339.12 → h = 18.
Answer: 18 feet.