The total surface area of the walls of a room 7m long, 5m...
The total surface area of the walls of a room 7m long, 5m wide and xm high is 96m2. Find the value of x
23
2
4
8
Correct answer is B
T.S.A of the wall =2(7×5+7×x+5×x)=9670+14x+10x=96⇒24x=96−70=26x=2624=1312
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