Question

The total surface area of a cone of radius 9 cm and slant height 12 cm is​

Answer 1

Answer:

TSA of cone = πr(r+l)

= 3.175 X 9 (9 + 12)

= 28.575 ( 21 )

= 600.075 cm

Answer 2

Answer:

Step-by-step explanation:

formula pi.r(l +r) = 22/7 * 12 * 21 = 22*12*3 = 792

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