Question

The area of Joe's square yard is 196 square meters. Since his house is on one side of the yard, Joe only needs to fence the other three sides of the yard. How many meters of fencing does Joe need to enclose his yard? (Number answer only, no units.)

Answer 1

42

Explanation:

So are is length times width,

since we are dealing with a square, then the length and the width are congruent

so we can say that, for this case:

a = length * length

hence

196 = length^2

14 = length

and

14 = width

since only 3 sides of this square are needed, one only has to multiply the length by 3

14 * 3

=42

so only 42 meters of fencing are needed