Solve the Problem $9 \mathrm { ft } ^ { 2 }$

Multiple Choice

Solve the problem.
-A dome is in the form of a partial sphere, with a hemisphere of radius 10 feet on top and the remaining part of the sphere extending 5 feet to the ground from the center of the sphere. Find the surface area of the dome to the nearest square foot.

A) $9 \mathrm { ft } ^ { 2 }$
B) $9425 \mathrm { ft } ^ { 2 }$
C) $94 \mathrm { ft } ^ { 2 }$
D) $942 \mathrm { ft } ^ { 2 }$