58 of a tank is filled with water. Another 84 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 32 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 = 84 ℓ
18 of the tank = 84 ÷ 3 = 28 ℓ
88 of the tank = 28 x 8 = 224 ℓ
224 ℓ = 224000 mℓ
(b)
Length of the tank
= 224000 ÷ (32 x 50)
= 140 cm
Perimeter of the base
= (140 + 50) x 2
= 380 cm
Answer(s): (a) 224000 mℓ; (b) 380 cm