Perimeter, Area & Volume

Question 1

Find the perimeter of a field which measures 20m by 15m?

Answer 1

Perimeter = add sides
20 + 20 + 15 + 15
= 70m

Question 2

Find the area of a field which measures 20m by 15m

Answer 2

Area of rectangle = length x width

20 x 15 = 300 m²

Question 3

Find the volume of a cube that has a side measuring 5cm

Answer 3

volume of cube (or cuboid) = length x width x height volume = 5 x 5 x 5 = 125 cm³

Question 4

How many square tiles (25cm by 25cm) can fit along a wall measuring 3.5m

Answer 4

3.5m = 350cm

350 ÷ 25 = 14 tiles

Question 5

Find the volume of a cuboid which measures 30cm by 0.5m by 40cm

Answer 5

Volume = length x width x height (Note all units need to be the same first)
Volume = 30 x 50 x 40 = 60000cm³
Or Volume = 0.3 x 0.5 x 0.4 = 0.06m³

Question 6

The area of a field is 50m². If the length of the field is 10m, how wide is it?

Answer 6

Area = length x width 
50 = 10 x width 
width = 5m

Question 7

What unit do you measure volume?

a) m
b) m²
c) m³

Answer 7

c) m³