Right Circular Cone

Use this worksheet to practice finding the volume and surface area of a right circular cone. Adjust the height and radius using the labeled sliders. Answer the questions below. Click on the check boxes to find helpful hint and verify your answers.

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1. Find the volume and surface area for 12 different cones by randomly choosing different heights and radii.

2. Find the missing dimensions below. Round to the nearest unit.
a. Cone: volume is 144 unit³, diameter is 8 units, height ___ units

b. Cone: surface area is 170.5 unit², radius is 4 units, slant height ___ units

3. Plants: A cone-shaped paper cup is 8 units high with a diameter of 6 units. If the ivy plant on Julia's desk needs 750 unit³ of water, about how many paper cups of water will she use to water it?

L. Prisco & R. Valcin, Created with GeoGebra