Question

And what would be the ventilation air size?

A. 14.3 sq in
B. 18 sq in
C. 20.2 sq in
D. 21 sq in

Answer 1

The ventilation air size can be determined by calculating the area of the main uptake air duct using the formula for the area of a circle.

Step-by-step explanation:

The ventilation air size can be determined by calculating the area of the main uptake air duct. Since the duct is in the shape of a circle, we can use the formula for the area of a circle, A = πr², where r is the radius of the duct. The diameter of the duct is given as 0.300 m, so the radius is half of that, which is 0.150 m. Plugging this value into the formula, we get A = π(0.150)² = 0.0707 m². To convert this to square inches, we can use the conversion factor 1 m² = 1550 sq in. Therefore, the ventilation air size is approximately 110 sq in.