The mass of a disc cut out of an ironplate is proportional to the squa – InterviewSolution

1.

The mass of a disc cut out of an ironplate is proportional to the square of theradius of the disc. If a disc with a radiusequal to 15 cm has a mass of 1.80kg,what will the radius of a disc with a massof 0.20 kg?

Answer»

Answer:

1.67

1.8/15 = 0.2/x

therefore when we calculate

answer is 1.67 CM

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