the size of the display board of a school is 430 cm by 210 cm if a satin ribbon added as a boder around the entire display board what is the length of ribbon required in meters?
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Answer:
Length =430 cm
Breadth = 210 cm
For the length of ribbon we have to find the perimeter of the display board
perimeter of rectangle= 2(l+b)
=2(430+210)
=2 640
=1280 (Answer)
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