darshanraj darshanraj

03-06-2018
Mathematics

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a toy is made from a hemisphere, a cylinder and a cone is shown find the total are of a toy

a toy is made from a hemisphere a cylinder and a cone is shown find the total are of a toy class=

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03-06-2018

Surface area of the cylinder = 2 pi r * 40 = 2 pi * 3* 40 = 24 pi
of the cone this is pi * 3 * 5 = 15pi
of the hemisphere this is 1/2 * 4 * pi * 3^2 = 18pi

So the answer is 24pi + 15pi + 18pi = 57pi = 178.98 cm^2

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