# Area of a plane in square meters

case guesstimation
Recent activity on May 07, 2018
3.0 k Views

Hello,

I was doing an investment case earlier todayand was told to calculate the area of a plane in square meters. Suffice to say that I lost all confidence at tat point. How would you calculate the surface area of a plane?

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So you'll just need to brush up a bit on your high-school geometry / trigonometry / mensuration.

Best to solve these by drawing it out on a piece of paper. Roughly, a plane is:

- a long cylinder of radius R

- wings

- few other parts but mostly negligible so mention them + say we'll ignore or add 10% to final ans.

For cylinder, the radius is obviously changing, but you can do a rough estimate of an average R that's midway between the min (at the nose) and max (at the center). Then surface area is 2*pi*r*length + some rough estimate of the two edges, say 5% extra.

For wings, it's a standard triangle roughly right-angled. Assume the sides, and make an estimate.

HTHs