Everything Maths Grade 10

7 8,6

5

14.The figure here is a pyramid with a square base. The vertical height of the pyramid isH=8 units and
the slant height ish=8,73 units; each side of the base of the pyramid isb=7 units. Find the volume
of the figure. Round your answer to two decimal places.

7

8

8,73

15.Consider the solids below:

3 cm

10 cm

12

cm

15 cm

15 cm

4 cm

a)Calculate the surface area of each solid.

b)Calculate the volume of each solid.

16.If the length of each side of a square is a quarter of its original size, what will the area of the new square
be?
17.If the length of each side of a square pyramid is a third of its original size, what will the surface area of
the new square pyramid be?

18.If the length of the base’s radius and the height of a cylinder is halved, what will the volume of the new
cylinder be?

Chapter 13. Measurements 461