Question

The perimeter of a rectangle is 160 cm. The rectangle is 4 times longer than wide. What are the length and width of this rectangle?

A) l=65

Answer 1

Answer:

l=40cm and b=40cm

Step-by-step explanation

perimeter of rectangle = 2(l+b)

2(l+b)=160

l+b=80

b=80-l

rectangle=4(b)

2(l+b)= 4(80-l)

2(l+b)=320-4l

2l+2b=320-4l

2l+2(80-l)=320-4l

160-2l=320-6l

-160=-4l

160=4l

l=40cm

b=80-40

b=40cm

Answer 2

Answer:

length = 40cm

and breadth=120cm

Step-by-step explanation:

let length be x

then, given that 4x=160

so, x=160/4= 40 cm

and breadth=160-40=120

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