The dubois formula relates a person's surface area, s, in meters2, to weight, w, in kg, and height, h, in cm, by (a) what is the surface area of a person who weighs 60 kg and is 160 cm tall? (b) the person in part a stays constant height but increases in weight by 0.4 kg/year. at what rate is his surface area increasing when his weight is 64 kg?

Answer

given,  

Dubois formula  

a) mass = 60 Kg  

   height = 1.6 m

          S = 1.252 m²  

   hence, surface area of a person is equal to 1.193 m² .  

b)  

   weight = 60 Kg  

now,  

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg