Grade 8 Math: Volume of a Cone
This worksheet helps 8th-grade students practice calculating the volume of cones using the formula V = (1/3)πr²h.
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Volume of a Cone Worksheet
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Read each question carefully and calculate the volume of the cone. Use π ≈ 3.14 and round your answers to two decimal places where necessary. The formula for the volume of a cone is V = (1/3)πr²h.
1. A cone has a radius of 3 cm and a height of 7 cm. Calculate its volume.
2. In the formula V = (1/3)πr²h, 'r' stands for the of the cone, and 'h' stands for its .
3. What is the approximate volume of a cone with a radius of 5 inches and a height of 9 inches? (Use π = 3.14)
235.5 cubic inches
706.5 cubic inches
188.4 cubic inches
94.2 cubic inches
4. A party hat is shaped like a cone with a diameter of 6 inches and a height of 8 inches. How much space does the hat occupy?
5. If you double the height of a cone while keeping the radius constant, its volume will also double.
True
False
6. A conical paper cup has a volume of 100 cubic centimeters and a height of 6 cm. What is the approximate radius of the cup? (Use π = 3.14)