the perimeter of a rectangle is 72 CM the length is 3 times the width. find the area of the rectangle.
Answers
Answered by
1
Answer:
let the width be 'x' cm long
therefore length =3x cm
A.T.Q
2(3x) + 2x =72
8x=72
therefore x= 9
therefore width =9cm,. length =27cm
hence area = 27×9 = 243cm
Answered by
1
Answer:
243cm²
Step-by-step explanation:
let length=x and breadth =3x
2(l+b)=peri of rectangle
substitute the values
2(x+3x)=72
2(4x)=72
8x=72
x=72/8=9
3x=27
area of rectangle=l×b
9×27=243cm²
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