Anyone can figure this out

What is the radical expression that is equivalent to the expression 27 1 over 5?

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

See attachment below and find the equivalent of tan(∠qsr)