Question

The length of a rectangle is 3 times it
width and its perimeter is 56 m. The
length is​

Answer 1

Answer:

2(l+b)= P

=> 2(X+3x)= P

=> 2(X+3X)= 56

=> 4X = 28

=> X= 7

thus, length= 21 m and breadth = 7 m

Answer 2

Answer:

$\huge\underbrace\mathcal\purple{ AnSwEr }$

let,length= x

then,width=3x

perimeter of rectangle=2(l+b)

=>2(x+3x)=56

2X+6x=56

8x=56

x=56/8=7

x=7

Hence,length=7

width=7*3=21