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iGCSE (2021 Edition)

10.14 Surface area of cones, pyramids and spheres

Interactive practice questions

The diagram shows a water trough in the shape of a half cylinder.

A horizontal cylinder is cut in half parallel to the length of the cylinder. The length of the cylinder is measured h1 m. The radius of the circular base is measured r1 m.
A water trough is shown in the shape of a half cylinder and with a length of $2.49$2.49 m. The radius of the circular base is measured $0.92$0.92 m.

Find the surface area of the outside of this water trough.

Round your answer to two decimal places.

Medium
4min

Consider the solid pictured and answer the following:

Hard
8min

Find the surface area of the cone shown.

Round your answer to two decimal places.

Easy
2min

The top of a solid cone was sawed off to form the solid attached. Find the surface area of the solid formed correct to two decimal places.

Easy
5min
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Outcomes

0607C7.4B

Surface area of pyramids and cones.

0607C7.4C

Surface area of sphere and hemisphere.

0607E7.4B

Surface area of pyramids and cones.

0607E7.4C

Surface area of sphere and hemisphere.

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