A right circular solid cone of base radius 42cm and height 84cm has the same volume as a solid cylinder of height 112cm find the radius of the cylinder

21 cm

Step-by-step explanation:

Volume of cone is given by

volume of cylinder is given by

where r is the radius of base and h is the height

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For cone

radius = 42cm

height = 84

volume =  (1)

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For cone

radius = to find let it be r

height =112

volume =  (2)

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since , volume of both solid are same

thus, equation 1 = equation 2

Thus, radius of cylinder is 21 cm

the answer is 1/4

step-by-step explanation:

the second option

step-by-step explanation: