rupammandal01
contestada

You have two disks. The bigger one has 24 inch radius and its is rigidly attached to a peg (it doesn’t turn or move). The smaller one has 8 inch radius and it rotates around the bigger disc. How many times does the smaller disc about its centre when it has completed one full revolution around the bigger disc?

Respuesta :

perimeter of bigger disc = 2π*24 inch
perimeter of bigger disc = 2π*8 inch

number of rotations =2π*24/2π*8 = 3




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