Surface area of a square with 6 square faces and the edges are 5 feet in length

Find the value of the variable and the length of each secant segment.

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

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days