A glass jar is shaped like a cylinder. The jar has a height of 8 inches and a base with a diameter of 4 inches. There are 3 inches of grape jelly left in the jar. What is the volume of the jelly in the jar?

It doesn't really matter that the jar is 8 inches high. What matters is how high the jelly is (3 inches), so the height that matters is 3 inches. The diameter of the jar is 4 inches. We need to know the radius of the circle in order to find out the area of the circle, so divide the diameter in half. So half of 4 inches is 2 inches, which is the radius. Use the formula where the volume is equal to pi times the radius squared times the height:
Volume = 3.14 *( 2)^ 2 * 3 Square the 2 first
Volume = 3.14 * 4 * 3 Multiply by 3
Volume = 3.14 * 12 Then multiply by pi (3.14)
Volume = 37.68
(If you round it to more than the hundredth for pi, like 3.14159, then your answer would be 37.69908)
(If you use 3.141592653589 for pi, then
Volume = 37.699111843068, etc.)

Answered by anitajoharder | 2024-06-10

To find the volume of grape jelly in the jar, we use the formula for the volume of a cylinder: V = πr²h. The radius of the jar is 2 inches, and the height of the jelly is 3 inches, leading to a volume of approximately 37.68 cubic inches. Therefore, the volume of the grape jelly left in the jar is about 37.68 cubic inches.
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Answered by anitajoharder | 2024-12-23