Question

The length of rectangular floor is 20m mire than its breadth if perimeter of a floor is 280m what is it length

Answer 1

Answer:

length=20+60

=80m

breadth=60 m

Step-by-step explanation:

let the breadth be x m

and length be 20+x m

we know that

perimeter=2(l+b)

280=2(20+x+x)

280÷2=20+2x

140= 20+2x

140-20= 2x

120÷2=x

x=60

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Answer 2

Answer:

80m is the right answer.

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Step-by-step explanation:

Let the breadth be y.

Then length be y+20m

• Perimeter of rectangle => 2(l+b)
• 280m=> 2(y+y+20)
• 280m=>2(2y+20)
• 280m=>4y+40m
• 4y=280m-40m
• 4y=240m
• y=240m/4
• y=60m.

Therefore , the breadth of the rectangle=> 60m

Then length would be =>60m+20m=>80m.