Video: Finding the Perimeter of a Rectangle

Using the formula 2𝑙 + 2𝑀, where 𝑙 represents the length and 𝑀 the width, find the perimeter of the given rectangle if 𝑙 = 5 and 𝑀 = 2.

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Video Transcript

Using the formula two 𝑙 plus two 𝑀, where 𝑙 represents length and 𝑀 the width, find the perimeter of the given rectangle if 𝑙 equals five and 𝑀 equals two.

So we know the length of the rectangle is five and the width equals two. And we’re told to use the formula two 𝑙 plus two 𝑀. So to calculate the perimeter, we need to multiply the length by two and the width by two. Two times five is 10. So two 𝑙 equals 10. And two times two is four. So two 𝑀 equals four. 10 plus four is 14. So the perimeter of the rectangle is 14.

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