Question

A manufacturing company is producing dinner plates with a diameter of 12 inches. They plan to put a gold edge on each plate. Determine how much gold edging they need for each plate by finding the circumference of each plate. Round to the nearest tenth.

Answer 1

37.70

Explanation:

12xpi or 3.14= 37.68

rounded to the nearest tenth= 37.70

Answer 2

Given:
Diameter = 12 inches.

Find: Circumference of the dinner plates.

Circumference = 2 π r

π = 3.14
r = diameter / 2 = 12/2 = 6 inches

Circumference = 2 * 3.14 * 6 inches
Circumference = 37.68 inches

37.68 inches rounded to the nearest tenth is 37.70 inches.

Circumference can also be computed by multiplying pi and the diameter.

C = 3.14 * 12 inches
C = 37.68 inches