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Given that a varies directly with the cube of b. When a is 3,b is also 3. find b when a is 24. |
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Answer» Since a varies directly with cube of b, then `a=kb^(3)` Given that, a=3,b=3 `3=k(3)^(3)` `k=3//27=1//9` Now, `a=kb^(3)` `implies24=1//9b^(3)` `b^(3)=24xx9` `b^(3)=216` `thereforeb=6`. |
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