3.5 cm What is the
surface area
of this
figure?
18.4 cm
9.1 cm
Use 3.14 for pi and use the slant height. Do not round your answer.

Answer without rounding: 59.62075 cm2

Explanation: The general formula for the surface area of a right circular cone is A= πrl+πr2.

Using the pictures information, we have A=(3.14*1.75*9.1)+(3.14*1.75^2).

Also, we divided the diameter 3.5 cm in half to find the radius of 1.75 cm.

The final answer without rounding of course is 59.62075 cm2.

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