The dimensions of the bulletin board could be as follows:
length = 5 ft.
width = 3 ft.
What is the are of rectangle?
[tex]A = l\times w[/tex]
where, 'l' represents the length of the rectangle
and 'w' represents the width of the rectangle
What are factors?
"If multiplying two whole numbers gives us a number, then the numbers we are multiplying are the factors of the product number."
For given example,
An area of the rectangular bulletin board is 15 sq. ft.
⇒ A = 15 sq. ft.
⇒ l × w = 15
Given that, the width and length of the bulletin board are whole
numbers.
Factors of 15 are,
15 = 5 × 3
15 = 15 × 1
From given figure we can say that he could use the dimension 5 ft. × 3 ft. for the bulletin board.
This means, the length of the bulletin board could be 5 ft. and the width could be 3 ft.
Learn more about the area of the rectangle here:
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