Question

The perimeter of a rectangular garden, whose length is $4m$ more than its width, is $40m$. Find the dimensions of the rectangle.

Answer 1

Let the width be xm. Then the length would be (x+4)m.

Given perimeter = 40m

Perimeter = 2(l+b)

40 = 2(x+4+x)

20 = 2x+4

16 = 2x

x = 8m

So, the width is 8m and the length is 12m.