## Elementary Technical Mathematics

79$\frac{1}{2}$ in
three vents are equally spaced along a wall 26 ft 6 in. = 26 x 12 + 6 = 318 in. So it divides the walls into four equal dimesions Dimension of d = $\frac{318}{4}$ = $\frac{159}{2}$ = 79$\frac{1}{2}$ in