Multiple choice

The frustum cone curved surface area is 600 $mm^3$. The upper and lower circle area of a cone is 25 and 35 mm. Find the total surface area.

  1. 660 $mm^3$
  2. 650 $mm^3$
  3. 560 $mm^3$
  4. 660 $mm$
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A Correct answer
Explanation

The total surface area of a frustum is the sum of the curved surface area and the areas of the two circular bases. Total Area = 600 + 25 + 35 = 660. The units in the options are inconsistent, but 660 is the correct numerical value.

AI explanation

The total surface area of a frustum is the sum of its curved surface area and the areas of its upper and lower circular bases. Adding the given values, the total surface area is 600 plus 25 plus 35. The result is 660 cubic millimeters.

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