Practice questions 16.1 1. Calculate the volume and total surface area of these prisms.
(i) 7 cm 10 cm 10 cm 4 cm 8 cm 15 cm 7 cm 6 cm
2. Calculate the volume and total surface area of these solid cylinders, accurate to two decimal places. (i)
(ii) 8 m 25 mm 15 m 4.5 mm (iii) 14 cm 20 cm 6 cm
If you are not given a value for π, use the π button on your calculator.
(iv)
r = 4 _
3 m
_ 2 m
150 5 cm (ii) (iii) 5 cm
3. Calculate the volume and total surface area of these solid spheres and hemispheres in terms of π . r = 7 cm
(i) (ii) r = 1.5 m (iii) 5 cm (iv) d = 21 mm
4. Copy and complete the table below to fi nd the missing information. Give your answers to one decimal place where appropriate.
(i) Solid cylinder
Height = 10 cm Volume = 490 π cm3 Radius = ?
(ii) Prism
Volume = 440 m3 Area of cross-section = 60 m2 Height = ?
(iii) Solid sphere (iv) Hemisphere (v) Sphere
Volume = 4 500 π mm3 Radius = ?
Volume = 6 π km3 Radius = ?
5. A circular table top has a radius of 140 cm. (i) Calculate the area of the table top, giving your answer in terms of π . (ii) The volume of the table top is 34 300 π cm3
the table top to one decimal place.
6. Three spheres of radius 6 cm are packed tightly into a cuboid as shown. (i) Calculate the volume of one sphere to one decimal place. (ii) Calculate the volume of the cuboid. (iii) What percentage of the cuboid is not occupied by the spheres?