Find the perimeter of this semi-circle with diameter, d = 80cm. Give your answer as an expression in terms of pi.

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?