Answer:
Length = 7.5 , Width = 22.5 units .
Step-by-step explanation:
Given : A rectangle is 3 times as long as it is wide. The perimeter is 60 cm.
To find : Find the dimensions of the rectangle. Round to the nearest tenth if necessary.
Solution : We have given
Let the width of rectangle = x .
According to question
Length of rectangle = 3x
Perimeter of rectangle = 2 (length + width )
Plug the values
60 = 2 ( x + 3x ) .
60 = 2 ( 4x ) .
60 = 8x .
On dividing both sides by 8.
x = 7 .5
Length = 7.5 units
width = 3x = 7.5 *3 = 22.5 units
Therefore, Length = 7.5 , Width = 22.5 units .
