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M is directly proportional to r^3 when r=4 ,m=160 .work out the value of m when r=2
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M is directly proportional to r^3 when r=4 ,m=160 .work out the value of m when r=2

User Amiraslan
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1 Answer

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M=kr^3

160=k*4^3

2.5=k

M=2.5*2^3

=20

User Nicolas Gimelli
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5.7k points
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