surface area = 0.5(4[pi]r^2) + [pi]r^2 Volume = 0.5((4[pi]r^2)/3)
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(2/3)πr³
3*pi*r2
The volume of a hemisphere is given by the formula 4 x pi x r3/6, where r is the radius and pi is approximately 3.1416
Because it is a hemisphere
Calculate the radius (it is half the diameter).Use the formula for a sphere: area = 4 x pi x radius2.Since a hemisphere is half a sphere, divide this result by 2.Question:Do you mean the surface area to include the flat face of the hemisphere?If so then follow the above instructions and add pi*42 to your answer which will give you the complete surface area of the hemisphere.