Question 1011307
Hemisphere surface:
4*pi*r^2
Big hemisphere:
4*pi*(22/2)^2= 4*pi*11^2
Little hemisphere:
4*pi*(12/2)^2= 4*pi*6^2
Use your calculator. First the square, then multiply the result times 4 and pi.
Finally, add the two surfaces to get your total surface area.
J