Question : If the area of the non-spherical portion of a solid hemisphere is 1,560 m2, then the total surface area of the hemisphere is:
Option 1: 6,240 m2
Option 2: 4,680 m2
Option 3: 5,140 m2
Option 4: 3,120 m2
Correct Answer: 4,680 m 2
Solution :
Given: The area of the non-spherical portion of a solid hemisphere is 1560 m
2
.
So,
The total surface area of the hemisphere =
Substitute the value of
⇒
Hence, the correct answer is 4,680 m
2
.