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The base of a right circular cone has a radius of 8 cm and a slant height of 12 cm. If the radius and the slant height of the right circular cone are each multiplied by 9, what is the surface area of the new cone divided by the surface area of the original cone? Select one: a. 72 b. 18 c. 96 d. 81

Respuesta :

I am not quite sure how to do this, but I think it is this way:

You know that radius in the cone is 8 cm, and slant height is 12 cm.You must multiply 8 cm with 12 cm, because you must take height multiplied with radius.

8 x 12 = 96 cm
So, the answer is C, I think.

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