58 of a container is filled with water. Another 90 litres of water are needed to fill the container to its brim.
- What is the volume of the container in mℓ?
- The height of the container is 30 cm and its breadth is 50 cm. Find the perimeter of its base.
(a)
Fraction of the container not filled with water = 1 -
58 =
38 38 of the tank = 90 ℓ
18 of the tank = 90 ÷ 3 = 30 ℓ
88 of the tank = 30 x 8 = 240 ℓ
240 ℓ = 240000 mℓ
(b)
Length of the container
= 240000 ÷ (30 x 50)
= 160 cm
Perimeter of the base
= (160 + 50) x 2
= 420 cm
Answer(s): (a) 240000 mℓ; (b) 420 cm