Question

Antarctica is roughly semicircular, with a radius of 2.00­103 km (see the figure). The average thickness of its ice cover is 3.00­103 m. How many cubic centimeters of ice does Antarctica contain? (Ignore the curvature of Earth.)

Answer 1

r=2.00∙〖10〗^3 km=2.00∙〖10〗^8 cm
d=3.00∙〖10〗^3 m=3.00∙〖10〗^5 cm
The volume is
V=(πr^2)/2 d=(π(2.00∙〖10〗^8 )^2)/2 (3.00∙〖10〗^5 )=1.88∙〖10〗^22 cm^3.