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a room 5 m long and 4 m wide is surrounded by a verandah.  if the verandah occupies an area of 22 square meter, find the width of the verandah.

Answer :

the length of room = 5 m
breadth of room  = 4 m
area of verendah =22 = 5w+4w+5w+4w +w²+w²+w²+w²
                         =22 =18w+4w²
                   2w²+9w-11=0
                         w = 1m

tisrisu
in simple method
2x+20=22
2x=22-20
2x=2
x=1

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