janet is frosting the top layer of 4 rectangular birthday cakes. If each cake measures 13 inches by 8 inches, how many square inches of cake will be covered by frosting?

(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.