Length and breadth of a bulletin board are r cm and t cm respectively. 2. If 10 cm extra strip is required then what will be the total length of the strip?
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Perimeter of the bulletin board = 2 x (l+b)
= 2 x (r+b)
= 2rb cm
If 10 cm is added, length = 2rb + 10 cm
= 2 x (r+b)
= 2rb cm
If 10 cm is added, length = 2rb + 10 cm
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