Q. 14.0( 5 Votes )

The surface area

Answer :

Let r cm be the radius of the total sphere.

Then it's surface area would be 4πr2 cm2

This surface area is given as 120 cm2.

we can equate the two:

= 120

= 30


Curved surface area of a hemisphere

Base area =

So total surface area of a hemisphere = 2 + = 3

Substitute value from (1)

So total surface area of each hemisphere

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The surface area Kerala Board Mathematics Part-2