Both circle q and circle r have a central angle measuring 60°. the area of circle q's sector is 9π m2, and the area of circle r's sector is 16π m2. which is the ratio of the radius of circle q to the radius of circle r?

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

ιт ιѕ:

125.28

нσρє ι ¢συℓρ нєℓρ

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.