Question

ms. luna is waterproofing the top of a rectangular wood deck. the width of the deck is 3 m less than the length. the length is 8 m. what is the area to be waterproofed? a 26 m² b 40 m² c 37 m² d 24 m²

Explanation:

Step1: Find the width

Given length $l = 8$ m and width $w=l - 3$. So $w=8 - 3=5$ m.

Step2: Calculate the area

The area formula for a rectangle is $A=l\times w$. Substitute $l = 8$ m and $w = 5$ m. Then $A=8\times5 = 40$ $m^{2}$.

Answer:

B. $40\ m^{2}$