SOLUTION: If a rectangle has a area of 144m squared. What is the width, if the length is three times it's width?

Algebra ->  Rectangles -> SOLUTION: If a rectangle has a area of 144m squared. What is the width, if the length is three times it's width?      Log On


   

Question 942604: If a rectangle has a area of 144m squared. What is the width, if the length is three times it's width?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
W=width L=length=3W
A=L x W =144 sq m
(3W)(W)=144 sq m
3W%5E2=144+sqs+m divide each sidde by 3
3w%5E2%2F3=144%2F3
w%5E2=48+sq+m find Square root of each side
sqrt%28W%5E2%29=+sqrt%2848+sqm%29
W=4%2Asqrt%283%29
CHECK
A=L x W=3W x W
144+sq+m=3%284%2Asqrt%283%29%29%2A4%2Asqrt%283%29
+144+sq+m=48%28sqrt%283%29%5E2%29
144 sq m=48(3)sq m
144 sq m= 144 sq m