Question

Jasmine is making a display board for the school talent show. The display
board is a 5 m by 3 m rectangle. If ribbon costs 5 per metre, how much will
it cost to add a ribbon border around the entire display board?

Answer 1

Answer:

area of rectangle= l×b

we 5m×3m

15msquar

15×5

75 these is your answer

Answer 2

Answer:

80

Step-by-step explanation:

As we have to apply ribbon on the edges of the display board, we must find its perimeter.

Length of the display board= 5 m

Breadth of the display board= 3 m

P = 2× (l + b)

= 2× (5 + 3)

= 2× 8

= 16

Cost of the ribbon = 5 per metre

Cost of the ribbon to add border around the entire display board = 16×5=80

ANS. It will cost 80.

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