A cylindrical container has an interior diameter of 21 cm. It can hold 6.93 liters of liquid. Find its height
take Pi=22/7
V = 6.93L * 1000cm^3/L = 6930 cm^3.
V = pi*r^2 * h = 6930
(22/7)*(21/2)^2 * h = 6930
346.4h = 6930
h = 6930 / 346.4 = 20 cm.