Reshma helps her teacher to make a rectangular display board depicting “BE DISCIPLINED” which is to be kept near the main gate of the school. The length of the board exceeds its breadth by 4m. if the perimeter of the board is 84m, find the length and breadth of the display board.
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Step-by-step explanation:
let the bredth be 'b'
length = b+4
perimeter = 2(l+b) = 2(b+b+4) = 84
b+b+4 = 42
2b = 38
b= 19
Hence length is 23m and breadth is 19 m
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