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The length of a rectangle is 9 feet longer than the width. if the perimeter is 78 ​feet, find the length and width of the rectangle.

Respuesta :

Length - l

Width - w

Given, 

Perimeter = 78 ft

2(l + w) = 78

l + w = 39

l = 39 - w

Given,

l = 9 + w

39 - w = 9 + w

2w = 30

--- w = 15

--- l = 39 -w = 39 - 15 = 24

Therefore, the length of the rectangle is 24 ft and width is 15 ft. 

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