Given,
Height of cylinder = 10.5 m
= 3( A + A) = 2 curved surface area (A = circular area of box)
= 3 x 2A = 2(2πrh)
= 6πr2 = 4 πrh
= r = \(\frac{2h}{3}\) = \(\frac{2\times 10.5}{3}\) = 7 m
Volume of cylinder = πr2h = \(\frac{22}{7}\)x 7 x 7 x 10.5 = 1617 cm3