Question

a cylindrical tank has a capacity of 3080 CM 3 and diameter of its base is 28 cm find its depth

Answer 1

22/7×r×r×h=3080
14×14×h=3080×7/22
h=5cm

Answer 2

Volume = 3080cm³
diameter = 28cm
radius = 28/2 = 14cm
let it's height or depth be 'h'

volume = πr²h

$3080 = \frac{22}{7} \times 14 \times 14 \times h$

$\frac{3080 \times 7}{22 \times 14 \times 14} = h$

h = 5

depth is 5cm