The area of the 4 walls of a room is 168m squared. The breadth and height of the room are 10m and 4m respectively. Find the length of the room
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➡let length=x cm
➡aq l.s area =2h(l+b)
168 =2×4(x+10)
21 = x+10
x=11
hence length of room is 11 cm
➡aq l.s area =2h(l+b)
168 =2×4(x+10)
21 = x+10
x=11
hence length of room is 11 cm
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