Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.050000 cm thick to a hemispherical dome with a diameter of 65.000 meters.

Question

ranga · Answer

If assuming linear approximation then the volume will be:
surface area of hemisphere in cm^2 * thickness of paint in cm.

ranga · Answer

If no linear approximation then volume will be:
2/3 * pi * { (r + thickness of paint)^3 - r^3 }

anonymous · Answer

How an I find r?

anonymous · Answer

can*

ranga · Answer

radius r = diameter / 2 = 6500 / 2 cm.

anonymous · Answer

Thank you very much.

ranga · Answer

You are welcome.  
Since you are using linear approximation, the volume will be:
2 * pi * r^2 * thickness of paint   cm^3

anonymous · Answer

Than you once again.