Question

A jar of mayonnaise is shaped like a cylinder. The radius of the jar is 1.5 inches and its height is 7 inches. The mayonnaise sells for $0.08 per cubic inch. What is the cost of the jar of mayonnaise? Use 3.14 for pi. Round only your final answer to the nearest penny. Enter your answer in the box.

Answer 1

1st calculate the total volume of the jar:
V = PI x r^2 x H
V = 3.14 x 1.5^2 x 7 = 49.455 cubic inches

now multiply the total volume by the cost per cubic inch:
49.455 x 0.08 = 3.9564
rounded to the nearest penny would be $3.96 total cost

Answer 2

Radius of the jar = 1.5 inches

Height of the cylinder = 7 inches

Then

Volume of the cylinder = pie * (Radius)^2 * Height

= 3.14 * (1.5)^2 * 7

= 49.455 cubic inches

Value of 1 inch cube of mayonnaise = 0.08 dollars

Then

Value of 49.455 inch cube of mayonnaise = 0.08 49.455

= 3.956 dollars

= 3.96 dollars.