The perimeter of a rectangle is 24 ft. Its length is five times its width Let x be the length and y be the width. What is the area of the rectangle?
2 Answers
Explanation:
Perimeter is
Width
Length
So perimeter is
But Length =
So
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Substitute equation (2) into equation (1) giving:
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Substitute (3) into (2) giving:
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Check
Explanation:
In the statement length is said to be
So,
We can assume
Then perimeter=
So,the width=
Then length=
Area of rectangle =