Question

an 8 by 18 ft wall has three 4 by 5 ft windows.the area of the three windows is what percent of the area of the entire wall (including the windows)?

Answer 1

Answer:

Percentage of area of the three windows of the area of entire wall = 41.67%

Step-by-step explanation:

To find the percentage of area of the three window of the area of entire wall, we will need to find the area of the window (Length*breath) as well as the area of the entire wall (length*breath).

Area of the window = 4ft * 5ft = 20ft²

Area of three windows = Area of the window * 3

Area of the three windows = 20ft² * 3

Area of the three windows = 60ft²

Area of the entire wall = 8ft * 18ft

Area of the entire wall = 144ft²

Percentage of area of the three windows of the area of entire wall = area of the three windows / area of the entire wall * 100

= 60ft²/144ft² * 100

= 41.67%

Answer 2

Area of windows = (3×4×5)
= 60
area of wall = 8×18
= 144
=(60÷144)×100
=0.4167 × 100
=41. 67% or
=42 %