1.
Find the surface area to the nearest tenth of a sphere with a radius of 4.2 centimeters.
A.
121.4 cm
2
B.
221.7 cm
2
C.
310.3 cm
2
D.
235.6 cm
2
Hint
2.
Find the surface area of the sphere. Round to the nearest tenth.
A.
1017.9 cm
2
B.
904.8 cm
2
C.
4071.5 cm
2
D.
2046.6 cm
2
Hint
3.
Determine the surface area of the hemisphere given the area of a great circle of the sphere. Round to the nearest tenth.
A.
461.7 in
2
B.
615.6 in
2
C.
307.8 in
2
D.
769.5 in
2
Hint
4.
What is the surface area of a sphere that contains a great circle with a circumference of 2640 kilometers?
A.
1,663,869.4 km
2
B.
2,773,115.7 km
2
C.
3,317,521.8 km
2
D.
2,218,492.6 km
2
Hint
5.
Find the surface area of a hemisphere having a great circle with circumference of 2 millimeters. Round to the nearest hundredth.
A.
0.95 mm
2
B.
1.27 mm
2
C.
0.64 mm
2
D.
0.32 mm
2
Hint