Question

The perimeter of a parallelogram is 180cm. If one of its sides exceeds the other by 10 cm. Find the cost of decorating its border twice with a tape whose cost is Rs 2 per cm.

Answer 1

Answer:

1st side be xcm

Then,

2nd side = (x+10)cm

perimeter of ||gm = 2(1st side +2nd side)

180=2(x+(x+10))

180=2(2x+10)

180=4x+20

4x=180-20

160=4x

x=40cm

Hence,

x(1st side) = 40cm

x+10(2nd side) = 40+10

=50cm

Answer 2

Answer is in the image.

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