Find the surface area of the full sphere [ A = 4 pi R2 ] and then take half of it.
You wind up with [ 2 pi R2 ] for the outside surface area of a half sphere, or
[ 4 pi R2 ] for the (inside + outside) surface area of the half sphere. (Since
the inside and outside are now both exposed to the weather, you probably
want to paint both surfaces.)
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∙ 13y agoTo do this question, we have to ask ourself, what formula do you use to find the surface area of a sphere. The answer should be known to you, but it is 4πr2. Since we know how to find the surface area for a full sphere, then finding the surface for a half sphere is just half the job. You use the formula for the full sphere 4πr2, and divide it by 2... so (4πr2) / 2 . Voila!
The surface area of a semicircle has the round surface which is half a sphere and also has the flat surface which is a circle.
Surface area of half a sphere = 2*pi*radius2 Surface area = 200*pi = 628.3185307 square units.
100.48
Total surface area = (2*pi*r2)+(pi*r2) Area = 300*pi in square units
To do this question, we have to ask ourself, what formula do you use to find the surface area of a sphere. The answer should be known to you, but it is 4πr2. Since we know how to find the surface area for a full sphere, then finding the surface for a half sphere is just half the job. You use the formula for the full sphere 4πr2, and divide it by 2... so (4πr2) / 2 . Voila!
The surface area of a semicircle has the round surface which is half a sphere and also has the flat surface which is a circle.
Surface area of half a sphere = 2*pi*radius2 Surface area = 200*pi = 628.3185307 square units.
Surface area of a sphere (a rounded ball) = 4*pi*radius2 Surface area of half a sphere = 2*pi*radius2
To find the surface area of a hemisphere, you can use the formula: SA = 2πr^2, where r is the radius of the hemisphere. This formula takes into account the curved surface area of the hemisphere.
100.48
Total surface area = (2*pi*r2)+(pi*r2) Area = 300*pi in square units
The surface area of a sphere is 4(3.14)R2where R is the radius of the sphere so the surface area of your dome is half of that. 2(314)R2
The answer for the hemisphere is half the volume of a sphere, which is given by the formula (2/3)πr³, where r is the radius. The surface area of a hemisphere is half the surface area of a sphere, given by the formula 2πr².
1500pi
It is: 2*pi*radius2 square units
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.