Page 353 - Math Smart - 7

O What is the volume of the cereal box?
30 cm

20cm
O* Challenge!

Bern! wants to know the volume of the box once
7 cm
she has folded up the net shown.
Use the net to help her calculate the volume
of the box.
Hint: You could construct the net to help you 4 cm
find the missing dimensions.

O* Challenge!
a) Calculate the volume of this block of wood. 20 cm

12 m 12 m

5 m — 5 m

b) A hole has been cut from the centre of the block of wood.
Calculate the volume of the block of wood after the centre has been cut out.

24 cm
Challenge!

Calculate the volume of this cuboid.
48 cm''
72 cm

Challenge!
The two cuboids have the same volume.
Calculate the height of cuboid B.

2 cm

4 cm
6 cm
4 cm