How do you find the radius and diameter with the circumference

(c) the diagram shows the first three shapes of a matchsticks arrangement. first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Which of the following represents the length of a diagonal of this trapezoid?

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?