Question

Length of rectangle is thrice its breadth. Perimeter is 400m what is its length and breadth

Answer 1

Step-by-step explanation:

LET BREADTH BE X ...SO LENGTH WILL BE 3X....

ATQ

2(L+B)= 400

2(3X+X)=400

2(4X)=400

8X=400

X=50...

BREADTH =X=50 m

LENGTH =3X= 50×3=150m...

Answer 2

Answer:length :150m

              breadth:50m

Step-by-step explanation:let the breadth be: x       ,  then

 length : 3x

perimeter of a rectangle :2(l+b)

A.T.Q,

PERIMETER: 400m

SO,

2(length+breadth) =400m

2(3x+x) = 400m

2X4x=400m

8x=400m

x=400/8

x=50

therefore,length=3x=3X50=150m

                breadth=x=50m