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An inverted cone of vertical height 12cm...

An inverted cone of vertical height `12cm` and the radius of base `9cm` contains water to a depth of `4cm`. Find the area of the interior surface of the cone not in contact with the water. Use `pi=22/7`
(A) `402.12cm^(2)`
(B) `298cm^(2)`
(C) `377.14cm^(2)`
(D) `315cm^(2)`

A

`402.12cm^(2)`

B

`298cm^(2)`

C

`377.14cm^(2)`

D

`315cm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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