UPSKILL MATH PLUS

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The top is shaped like a hemisphere surmounted on a cone. The radius of the top is 8.6 \(dm\), and the slant height is 42 \(dm\). Find the total surface area of the top. [Hint: Use \(\pi = \frac{22}{7}\).]
 
Answer:
 
The total surface area of the top is  \(dm^2\).
 
[Note: Enter the answer up to two decimal places.]