Question

An oatmeal box is shaped like a cylinder. Use a net to find the surface area S of the oatmeal box, rounded to the nearest tenth. Then find the number of square feet of cardboard needed for 1,500 oatmeal boxes, rounded to the nearest whole number. Use 3.14 for π.
(The radius is 4 inches, and height is 9 inches for the cylinder)

Answer 1

Given:
radius = 4 inches
height = 9 inches. cylinder
1500 oatmeal boxes needed to be made.

We need to find the area of the cylinder.

A = 2 π r h + 2 π r²
A = 2 * 3.14 * 4in * 9 in + 2 * 3.14 * (4in)²
A = 226.08 in² + 6.28 * 16in²
A = 226.08 in² + 100.48 in²
A = 326.56 in²
Total area needed for 1,500 oatmeal boxes.

326.56 in² * 1,500 oatmeal box = 489,840 in²