Question

Reasoning A cylindrical water tank holds 26 litres when full. The water tank is 36 cm tall.
Work out the radius of the tank to 2 d.p.
(4 marks)

Answer 1

Answer:

r = 15.16 cm

Step-by-step explanation:

Mathematically, we need a consistent unit

26 liters = 26,000 cm^3 as 1000 cm^3 = 1 L

The volume of a cylinder is;

V = pi * r^2 * h

26,000 = 3.142 * r^2 * 36

r^2 = 26,000/(3.142 * 36)

r^2 = 229.86

r = √229.86

r = 15.16 cm