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The surface area of a sphere can be found with the formula 4pi * r2. Assuming the hemisphere is exactly half of a sphere, the surface area of a hemisphere can be found using the formula A = 2pi * r2 + pi * r2

Which can be written as A = pi(3r2)

942cm/pi = 3r2

314cm/pi = r2

r = 10cm (approximately)

The radius of the hemisphere is approximately 10cm.

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