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The side of an equilateral triangle is i...

The side of an equilateral triangle is increasing `10 \ cm`/`sec` at the rate of  Find the rate of increase of its perimeter.

Text Solution

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Given that,
`(da)/(dt)=10 \ cm`/`sec`
We know that, `P=3a`
where `a=` side
Differentiating w.r.t. `t`
`(dP)/(dt)=3(da)/(dt)`
`(dP)/(dt)=3*(10)=30 \ cm`/`sec`

Answer is:
...
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