9. The length of a rectangle is three times its width. It the perimete – InterviewSolution

1.

9. The length of a rectangle is three times its width. It the perimeter is 84 m, find thelength of the rectangle.

Answer»

length = 3x and width will be x so perimeter of rectangle is 2(L+ B) 84=2(3x+x) 84=2 x 4x84=8x84*8= x21upon7=xlength = 3 x 21 upon 7length = 9m

area of rectangle=l × b =3×9 =27. ans

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