Find the value of x, if angle x measures 102 degrees

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The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

(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.