La Géode in la Villette

 

This cinema was built in 1985. It is made up of a sphere with diameter 36 m. Its visible part above the ground is a spherical cap with height 29 m.

Round your answers to the nearest whole number.
Calculate the volume of the visible part in m3.

 

calotte

V = π h² ( R - h/3)

What is the radius of the sectional circle
of la Géode with the ground in m?