Q. 135.0( 1 Vote )

# The total surface area of a solid hemisphere of diameter 2 cm is equal to

A. 12 cm^{2}

B. 12π cm^{2}

C. 4π cm^{2}

D. 3π cm^{2}

Answer :

Diameter = 2 cm

Radius (r) = 1 cm

Total surface Area = Curved surface Area + Base Area

⇒ Total surface Area = 2πr^{2} + πr^{2} = 3πr^{2}

⇒ Total surface Area = 3π × 1^{2} = 3π cm^{2}

Out of all the four Options,

Correct Option : D

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