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tiannaetzel
24.01.2020 •
Mathematics
Arectangle has width that is 6 meters less than the length. the area of the rectangle is 280 square meters. find the dimensions.
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Ответ:
Dimensions are length 20 meter and width 14 meter
Solution:
Let "a" be the length of rectangle
Let "b" be the width of rectangle
Given that,
A rectangle has width that is 6 meters less than the length
Width = length - 6
b = a - 6
The area of the rectangle is 280 square meters
The area of the rectangle is given by formula:
Substituting the values we get,
Solve the above equation by quadratic formula
Since, length cannot be negative, ignore a = -14
Thus solution of length is a = 20
Therefore,
width = length - 6
width = 20 - 6 = 14
Thus dimensions are length 20 meter and width 14 meter
Ответ:
l and ll only
Step-by-step explanation:
Those are necessary.