9.find
a)the lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2m in diameter and 4.5m high
b)how much steel was actually used, if 1/12 of the steel actually used was wastedin making the tank .
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See I am not sure about part b but yes of course absolutely sure about part A
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Hope it works
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Rohinihunny:
a is correct but not b one
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