58 of a tank is filled with water. Another 102 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 34 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 = 102 ℓ
18 of the tank = 102 ÷ 3 = 34 ℓ
88 of the tank = 34 x 8 = 272 ℓ
272 ℓ = 272000 mℓ
(b)
Length of the tank
= 272000 ÷ (34 x 50)
= 160 cm
Perimeter of the base
= (160 + 50) x 2
= 420 cm
Answer(s): (a) 272000 mℓ; (b) 420 cm