58 of a tank is filled with water. Another 108 litres of water are needed to fill the tank to its brim.
- What is the volume of the tank in mℓ?
- The height of the tank is 30 cm and its breadth is 50 cm. Find the perimeter of its base.
(a)
Fraction of the tank not filled with water = 1 -
58 =
38 38 of the tank = 108 ℓ
18 of the tank = 108 ÷ 3 = 36 ℓ
88 of the tank = 36 x 8 = 288 ℓ
288 ℓ = 288000 mℓ
(b)
Length of the tank
= 288000 ÷ (30 x 50)
= 192 cm
Perimeter of the base
= (192 + 50) x 2
= 484 cm
Answer(s): (a) 288000 mℓ; (b) 484 cm