Find the volume of a hemisphere whose total surface area is 2772m^2

1.	Find the volume of a hemisphere whose total surface area is 2772m^2
Answer» ong>Answer: 21cm Step-by-step EXPLANATION: The surface of a sphere is 4(PI)r^2 and so the curved surface of a hemisphere is 2(pi)r^2 = 2772, so r^2 = 27727/(222) = 441 and r = 21 cm. Check: The volume of the hemisphere = (2/3)(pi)r^3 = (2/3)(pi)*21^3 = 19404 cc. Correct. The radius of the hemisphere = 21 cm.

Answer»

ong>Answer:

21cm

Step-by-step EXPLANATION:

The surface of a sphere is 4(PI)r^2 and so the curved surface of a hemisphere is 2(pi)r^2 = 2772, so r^2 = 2772*7/(2*22) = 441 and r = 21 cm.

Check: The volume of the hemisphere = (2/3)*(pi)r^3 = (2/3)*(pi)*21^3 = 19404 cc. Correct.

The radius of the hemisphere = 21 cm.

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Find the volume of a hemisphere whose total surface area is 2772m^2​

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Find the volume of a hemisphere whose total surface area is 2772m^2