The net free air area factor for a 12x12 louvers opening is 75%. Which option represents this factor in decimal form?

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Multiple Choice

The net free air area factor for a 12x12 louvers opening is 75%. Which option represents this factor in decimal form?

Explanation:
Net free air area factor is the fraction of the opening that actually allows air to flow, expressed as a decimal between 0 and 1. To convert a percentage to a decimal, divide by 100. So 75% becomes 0.75. Therefore, the decimal form of this factor is 0.75. If you wanted the actual free area, multiply the opening area by that factor: for a 12x12 opening (144 in²), 144 × 0.75 = 108 in². The other options represent different fractions: 0.50 = 50%, 0.90 = 90%, and 1.00 = 100%.

Net free air area factor is the fraction of the opening that actually allows air to flow, expressed as a decimal between 0 and 1. To convert a percentage to a decimal, divide by 100. So 75% becomes 0.75. Therefore, the decimal form of this factor is 0.75. If you wanted the actual free area, multiply the opening area by that factor: for a 12x12 opening (144 in²), 144 × 0.75 = 108 in². The other options represent different fractions: 0.50 = 50%, 0.90 = 90%, and 1.00 = 100%.

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