The perimeter of a semicircle is 20.56 miles. what is the semicircle’s radius?

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft. what is the area of the stage? enter your answer in the box. ft²

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.