What is the Mosteller formula for calculating body surface area (BSA)?

• A. BSA (m^2) = sqrt( Height(cm) × Weight(kg) / 3600 )
• B. BSA (m^2) = Height(cm) × Weight(kg) / 10000
• C. BSA (m^2) = sqrt( Height(m) × Weight(kg) / 3600 )
• D. BSA (m^2) = Height(cm) ÷ Weight(kg)

Answer: (A)

Mosteller formula estimates body surface area using height in centimeters and weight in kilograms. The calculation multiplies height by weight, divides by 3600, and then takes the square root, giving BSA in square meters: BSA = sqrt( Height(cm) × Weight(kg) / 3600 ). The 3600 factor aligns the units so the result is in square meters, and this simple form was developed as an easy-to-use alternative to more complex formulas. Using height in meters or omitting the square root would yield a different value, and the other options change the scaling or unit consistency, making them incorrect.