Question

Some parks contain fenced gardens. Suppose that it costs $80 to build each metre of fence, including materials and labour. How much does it cost to enclose a square with an area of 120 m²? ​

Answer 1

$3,505

Explanation:

The area is in the shape of a square. A square has 4 equal sides. Let X be the length of one side. The area of the square would be X^2.

We can find X:

X^2 = 120 m^2

X = 10.95 m

The total perimeter requiring a fence is 4X or 43.82 meters

The total cost is (43.82 m)*($80/m) = $3,505