a cuboidal water tank is 11m long, 7m broad and 4m high. find the capacity of the tank. a cylindrical tank of height 2m has the same capacity. find the radius of its base
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Answer:
cuboidal tank = 11m×7m×4m
capacity in m³ = volume = lbh = 11×7×4 = 77×4 = 308m³
1m³=1000 L. therefore capacity = 308000Litres
given cylindrical tank has same capacity
πr²h = volume = 308
22/7 × r² × 2 = 308
1/7 × r² × 2 = 14
r²=49
-> r=7m therefore radius of base = 7m
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