# Solids: Hemisphere

Document Reference: TN201309072 - Rev: 4.9 - Last Update: 26-03-2014 11:44 GMT - Downloaded: 11-Aug-2022 10:28 GMT

## A hemispere is half of a spere. ### Enclosed Volume of a Hemisphere

#### Formula

 Volume (V) = 2 × π × radius cubed 3
 V = 2 π r3 3

### Surface Area of a Hemisphere A hemisphere has one flat circular surface area and one curved surface area.

#### Flat Circular Surface Area Formula

 Flat Circular Surface Area (A1) = π × radius squared
 A1 = π r2

#### Curved Surface Area Formula

 Curved Surface Area (A2) = 2 × π × radius squared
 A2 = 2 π r2

#### Total Surface Area Formula

 Total Surface Area (A) = A1 + A2
 A = A1 + A2
 A = π r2 + 2 π r2
 A = 3 π r2 ### Edge of a Hemisphere

A hemisphere has one single edge that equals the circumference of the flat circular surface area.

#### Formula

 Edge = 2 × π × radius
 Edge = 2 π r

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