Question

The digit in bracket is the answer....so please help me by solving this question....

.Only surface area and volume ...I am asking....I hope someone help me......please give answer fast

Answer 1

Vol of water pumped out per second = 22/7 * (7/2)^2*72 cc
                                                           = 2772 cc
                                                           = 2.772 litre

Hence that per hour = 2.772 * 3600 = 9979.2 litre