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Product of the area, ______________________ and the perpendicular distance from axis are being used in the theorem to find the area of the revolution.

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Product of the area, ______________________ and the perpendicular distance from axis are being used in the theorem to find the area of the revolution.

(a) Length of generated curve

(b) Length of generated radius

(c) Length of generated length vector

(d) Length of generated area vector

I had been asked this question in an online interview.

My question is taken from Theorem of Pappus and Guldinus topic in portion Centre of Gravity and Centroid of Engineering Mechanics

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The correct choice is (a) Length of generated curve

Explanation: The theorem is used to find the surface area and the volume of the revolving body. This is done by using simple integration. Thus the surface area and the volume of any 2D curve. It is just the product of the area, length of the generated curve and the perpendicular distance from the axis.

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