Question

If the perimeter of a rectangle is 120 cm and the width is 25 then find its length

Answer 1

Perimeter of rectangle =2(l+b)=120
Perimeter =l+b=120/2=60
Perimeter =l+25=60
l=60-25=35cm

Answer 2

let length to be x

width=25cm

perimeter=120cm

perimeter of rectangle=2(l+b)

120cm=2(x+25)cm

120cm=2x+50cm

120cm-50cm=2x

70cm=2x

70/2cm=x

x=35cm

it's length is 35cm.

hope it helps you.

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