fashionmonarch fashionmonarch

22-02-2018
Mathematics

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A cone is made from a sector of a circle with radius 7.5 cm and central angle 120. Calculate the radius of the circular base of cone.

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sqdancefan sqdancefan

22-02-2018

The circumference of the cone is 1/3 the circumference of the circle from which it is cut, so its radius will be 1/3*7.5 cm = 2.5 cm.

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