Question

what is the formula for total surface area of hemisphere and sphere with explanation if you explain I will mark you as brainliest​

Answer 1

Answer: This may help you

Explanation:

A hemisphere is obtained when we cut the sphere into two equal halves. The total surface area of hemisphere will be equal to the sum of its curved surface area and the base area of hemisphere. The base is in circular shape here. We can find various real-life examples of the hemispheres such as our planet Earth can be divided into two segments the southern & northern hemispheres.

Surface Area of Hemisphere = 3 π r2

The Hemispheres can either be of a solid type or can be hollow.

Total Surface Area

The total surface area of the hemisphere– While calculating the total surface area of a hemisphere, we need to consider the base of the hemisphere which is circular. Thus, the total surface area of a hemisphere is equal to:

Total Surface Area (TSA) = Curved Surface Area + Area of the Base Circle

= 2 π r2 + π r2

= 3 π r2

Surface Area of Hemisphere

The surface area is the area occupied by the surface of the solid object. The surface area is classified into two types, namely;

Curved Surface Area (CSA)

Total Surface Area (TSA)

Answer 2

Answer:

$3\pi \: r \: r$