Mrs. Williamson had 18 students in her homeroom at the beginning of the school year and 24 students at the end of the year. What
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Answer:
<h2>270 ft²</h2>Step-by-step explanation:
<h3>METHOD 1:</h3><em>Look at the picture</em>
We can divide a given polygon into three rectangles:
The formula of an area of a rectangle <em>l × w </em>:
Calculate the area of each of the rectangles:
The area of the given polygon:
<em>Look at the second picture</em>.
We subtract the field of the smaller rectangle (<em>11ft × 6ft</em>) from the field of the large rectangle (<em>21ft × 16ft</em>):
