clear
clc
% 2-1	In the command window, write the commands that will solve the following problems:
% b.	You are constructing a hemispherical dome with an outer radius of 50ft.  The walls will be 
% solid concrete 9" thick.  Calculate v, the number of cubic yards of concrete that will be needed?

outerRadius = 50    % ft
thickness = 9   % inches
outerVolf = pi * 2 * (outerRadius^3) / 3; % cu ft
outerVoly = outerVolf / 27;
innerRadius = outerRadius - thickness / 12;
innerVolf = pi * 2 * (innerRadius^3) / 3; % cu ft
innerVoly = innerVolf / 27;
concrete = outerVoly - innerVoly