EduNinja

IGCSE Math B7.A Length, area and volumeTopic Practice

7.A Length, area and volume

Length, area, and volume

Question 9(b)

[Maximum number: 5]
\section*{Figure 2

\section*{Figure 2

Figure 3

Figure 3

Diagram NOT accurately drawn.

Figure 2 shows a solid right square-based pyramid with height 20 cm.
The volume of the pyramid is 960 cm3960\text{ cm}^3.
The pyramid is standing with its square base on a horizontal table.

The pyramid is divided into a smaller right square-based pyramid of height 10 cm and a frustum of the pyramid, as shown in Figure 3, by a horizontal cut.

Calculate the total surface area, in cm2^2 to 3 significant figures, of the frustum of the pyramid.

0 selected