If y varies inversely with the square of r, what is the constant of proportionality when y - 10 and 1 = 5?

Question:

If y varies inversely with the square of r, what is the constant of proportionality when y =10 and r = 5?

The constant of proportionality is 250

Solution:

Given that,

y varies inversely with the square of r

Which means,

Where, "k" is constant of proportionality

Subtitute y = 10 and r = 5

Thus the constant of proportionality is 250

answer: procent 54 wynosi 33,33%