Q : 3    Find the total surface area of a hemisphere of radius 10 cm. (Use \small \pi =3.14)
 

Answers (1)

We know,

The total surface area of a hemisphere = Curved surface area of hemisphere + Area of the circular end

= 2\pi r^2 + \pi r^2 = 3\pi r^2

\therefore The required total surface area of the hemisphere = 3\times3.14\times(10)^2

\\ = 942\ cm^2

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