The surface area of a pyramid can be calculated by adding the area of the base to the sum of the areas of the ... so the total surface area is \(25 + 4 \times 15 = 85cm~^2\) Next page. Cones.

Surface area and volume - WJEC Pyramids and cones - Higher tier only. We can calculate the volume of 3D shapes to find their capacity or the amount of space they occupy.