Question

the length of a rectangle is 3 times its breadth . if the perimeter is 84m, find the length of the rectangle

Answer 1

Let breadth be x
So length =3x
Perimeter=84
2(legth + breadth)=84
2(3x+x)=84
2(4x)=84
8x=84
x=84/8
X=10.5