Question

The height of a solid cone

is 12 cm and the area of the circular base is 64 pie .A plane parallel to the cone cuts through the cone 9 cm above the vertex of the cone,the area of the base of the new cone so formed is?

Answer 1

Answer:

The area of the base of the new cone is  36 π cm².

Step-by-step explanation:

Area of the circular base is A  = r² π  = 64 π cm²

So r = √64 = 8 cm

We can use the similar triangles:

8 : 12 = x : 9  ( x is the radius of the new cone )

12 x = 72

x = 72 : 12 = 6 cm

Ans finally the area of the new base is 6² π  = 36 π cm²

Answer 2

Answer:

its 36Πcm²

Step-by-step explanation:

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