The total surface area of the walls of a room 7... - WAEC Mathematics 2005 Question
The total surface area of the walls of a room 7m long, 5m wide and xm high is 96m2. Find the value of x
A
\(\frac{2}{3}\)
B
2
C
4
D
8
correct option: b
T.S.A of the wall \(=7\time 5 + 7 \times x + 5 \times x +7 \times 5 = 96\
70 + 7x + 5x = 96 \Rightarrow 12x = 96-70=26\
x = \frac{26}{12}=2\)
70 + 7x + 5x = 96 \Rightarrow 12x = 96-70=26\
x = \frac{26}{12}=2\)
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