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A sphere of radius 13cm is cut by a plane whose distance from the center is 5cm. What is the perimeter of the cut?

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A sphere of radius 13cm is cut by a plane whose distance from the center is 5cm. What is the perimeter of the cut?
posted Sep 13, 2016 by anonymous

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1 Answer

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To solve this we must realise that the cross section of a sphere is a circle and equation of a circle is given by
x^2 + y^2 = r^2 where x,y are variables and r is its radius. Solution is obtained as shown below
enter image description here

answer Sep 13, 2016 by Tejas Naik



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