A rectangle has a perimeter of 40 in. and a length of 15 in. What is its area?
2 answers:
The perimeter is 2*length + 2*width. 2*length is 30 in. So, 2*width is 10 in. Giving width = 5 inches.
Area = length * width = 15*5 = 75 square inches.
The perimeter is is all 4 sides added together
so 15+ 15 is 30 and 5+5 would be 10 more to make 40
so length is 15in and width is 5in
to find the area
A = l * w
a = 15*5
area is 75in
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