Question

a room has 3 identical windows which measure 3.2 feet by 2.8 feet. what is the surface area of all three windows together in square feet? surface area =

Explanation:

Step1: Calculate area of one window

The area of a rectangle is \(A = l\times w\). For one window, \(l = 3.2\) feet and \(w=2.8\) feet. So, \(A_1=3.2\times2.8 = 8.96\) square feet.

Step2: Calculate total area of three windows

Since there are 3 identical windows, \(A_{total}=3\times A_1\). Substitute \(A_1 = 8.96\) into the formula: \(A_{total}=3\times8.96=26.88\) square feet.

Answer:

\(26.88\)