Question

Ritu has a rectangular piece of cardboard of size 40 cm by 60cm. She wants to decorate it by sticking a piece of

ribbon all along the four edges. How much ribbon does she need?

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Answer 1

Answer:

Step-by-step explanation:

length of rectangular = 60cm

breadth of rectangle  = 40cm

so she wants to stick the piece ribbon to the borders it means she wants perimeter.

The perimeter of rectangle = 2(l+b)

                                             = 2(60+40)

                                             = 2*100

                                            = 200

The perimeter of rectangle = 200cm

.:. She needs 200cm of ribbon to stick it to four edges.

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