Question

The length of a rectangle is six times its width. If the area of the rectangle is 684 in squeared, find its perimeter.

Answer 1

Perimeter = 168
`6x^(2) =684\\\\(6x^(2) )/(6) =(684)/(6) \\\\x^(2) =114\\\\x=12Therefore, the width is 12cmand the length is 6*12cm= 72cmSo the perimeter is 12cm+12cm+72cm+72cm = 168cm`cm

Explanation:

If the length of a rectangle is 6 times greater than the width

We'll take width as x and then length will be 6x since length is 6 times greater than the width

so in order to find the value of x
We'll have to find like this