M is directly proportional to r2

When r=2, m=14

Work out the value of m when r=12

Question

Mathematics

Jamar

15 November, 13:53

M is directly proportional to r2

When r=2, m=14

Work out the value of m when r=12

+1

Answers (1)

Know the Answer?

Chanel Guerra · Answer 1

we have M is durectly porpotional to r^2

so M = (k) r^2

and when r=2, m=14

so 14 = (k) (2) ^2

k=14/4 = 7/2

so when r=12

m = (7/2) (12) ^2 = (7/2) (144) = 504

M is directly proportional to r2When r=2, m=14Work out the value of m when r=12

M is directly proportional to r2

When r=2, m=14

Work out the value of m when r=12