Question

what well - known mathematical model could you use to determine the size (in square feet) of your rectangular backyard?
size = 2x + 3y - 2; a formula including variables is necessary
p = 2(l)+2(w); the perimeter is necessary for determining the size.
a = l x w; the area formula would give the general area of the ground, thus estimating the size of the yard.
any of these would work equally as well.
none of these is correct.
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question 1 of 5

Explanation:

The size of a rectangular area is given by the area formula. The perimeter formula gives the distance around the rectangle, not the area. The formula with random variables \(2x + 3y-2\) has no relation to the area of a rectangle. So, the area formula \(A = L\times W\) is correct for finding the size (area) of a rectangular backyard.

Answer:

A. \(A = L\times W\); The area formula would give the general area of the ground, thus estimating the size of the yard.