Question

q. as the grounds maintenance manager, you need to replace the fence of a 30 - foot - by - 40 - foot commercial lot. which of the following shows the calculation for the perimeter of the lot?
a. 30 + 40 + 30 + 40 = 140
b. 30 + 40 = 70
c. 30 + 30 + 30 + 40 = 130
d. 30 × 40 = 120 square feet

Explanation:

Step1: Recall the perimeter formula for a rectangle

The perimeter \(P\) of a rectangle is \(P = l + w+ l + w\) (where \(l\) is length and \(w\) is width). Here \(l = 40\) feet and \(w = 30\) feet.

Step2: Substitute the values into the formula

Substitute \(l = 40\) and \(w = 30\) into \(P=l + w+ l + w\). We get \(P=30+40 + 30+40\).

Answer:

A. \(30' + 40' + 30' + 40' = 140'\)