$15 per meter 81m2

Question

deer Fencing costs 15 per metre. How much will it cost to enclose a square garden with an area of 81m2

Can you please tell me how you got the answer

Answer 1

Ok, the first thing you want to do is find out how long each side of the fence is. Since we know that area = length x width and that in a square the length and width are the same we can say that x = side length and that area = x² 

 

this means that:

81 = x²

 

to solve this take the square root of both sides:

√81 = √x²

9 = x

 

now that you know how long each of the sides are you can find the perimeter of the square (4x) and that will allow you to calculate the total cost. Are you able to solve it from here?