Answer:
502.5pi or 1578.1415
Step-by-step explanation:
find area of one triangle (BH divided by 2), then multiply it by two since there are two, then find area of circle(pir^2), divide in half because it is a semi-circle, add the areas together
angle c is congruent to angle D.
900/45 = 20
so ratio of middle school students and teachers: 900:45 = 20:1
if high school student-teacher ratio as middle school then
x/110 = 20/1
so x = 110 * 20 = 2200
answer is C) 2200
