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Which of the following could be the perimeter of a rectangle with an area of 48 square centimeters? A) 32 centimeters B) 48 centimeters C) 36 centimeters D) 24 centimeters

User Yelena
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2 Answers

4 votes

Answer:

Step-by-step explanation:

User Icats
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2 votes

Answer:

A) 32 centimeters

Explanation:

If the rectangle has a length L and a Width W the area is
A = L x W

Perimeter
P = 2(L + W)

We can write this as
P/2 = L + W

Given area = 48, lets try some factors of 48 and also add them and multiply by 2 to get the perimeter of each configuration

48 = 1 x 48 ⇒ P = 2( 1 + 48) = 2 x 49 = 98

48 = 2 x 24 ⇒ P = 2(2 + 24) = 2 x 26 = 52

48 = 3 x 16 ⇒ P = 2(3 + 48) = 2 x 51 = 102

48 = 4 x 12 ⇒ P = 2(4 + 12) = 2 x 16 = 32

48 = 6 x 8 ⇒ P = 2(6 + 8) = 2 x 14 = 28

now compare these values to the answer choices and see which one fits

Only 32 (Answer choice A) fits

So correct answer
A) 32 centimeters

User Tim Richardson
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