Can someone please help me with this, the answer has to be like this - - . - - Please 2.82 divided by 0.06

Find the area of the regular hexagon if a side is 20 cm.

Wrote and expression for the difference of p and 4

(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.