ideal gas law problem?

Question

an air bubble is 2 cm'3 at the bottom of 40 m deep water where the temperature is 4°C. What is the volume of the the airbubble at the water surface where the temperature of the water and air bubble are 20°C?

thanks for any help:)

Answer 1

pv/t=PV/T
(40*1000*9.8+.76*13600*9.8*2/273+4=.76*13600*9.8*V/20+273
v=5.15 cm^3