Question

Lateral surface area of hemi-sphere

Answer 1

Answer:

The area of a circle of radius r is π r2 and thus if the hemisphere is meant to include the base then the surface area is 2 π r2 + π r2 = 3 π r2

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

you have a hemispherical object then it has a base which is a circle of radius r. The area of a circle of radius r is π r2 and thus if the hemisphere is meant to include the base then the surface area is 2 π r2 + π r2 = 3 π r2. Hence in this case 3 π r2 = 1062.

The lateral surface area of a sphere is given by 4\pi r^{2} where r is the radius of the sphere. Hence, the Curved Surface Area (CSA) of a Hemisphere is given by 2\pi r^{2} where r is the radius of the sphere of which the hemisphere is a part. The total surface area (TSA) of a Hemisphere is given by 3πr2.