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Year 8 maths · N.12 · Volume of cylinders, cones and spheres

Volume of a silo: a cylinder with a cone on top

Find the volume of the cylinder and the cone separately, then add them. Use π = 3.14.

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  1. A silo is a cylinder with a cone on top. Both have a radius of 4 m. The cylinder is 7 m tall and the cone is 6 m tall. Find the total volume in m³. Use π = 3.14.

    Answer: 452.16

  2. A silo is a cylinder with a cone on top. Both have a radius of 7 m. The cylinder is 2 m tall and the cone is 3 m tall. Find the total volume in m³. Use π = 3.14.

    Answer: 461.58

  3. A silo is a cylinder with a cone on top. Both have a radius of 3 m. The cylinder is 9 m tall and the cone is 9 m tall. Find the total volume in m³. Use π = 3.14.

    Answer: 339.12

Tip: Find the volume of the cylinder and the cone separately, then add them. Use π = 3.14.

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