the edges are the of the shapes below are made up of matchsticks. Each matchstick has the same length. what is the perimeter of each shape. Give your answers in number of matchsticks. ​

What is the volume of this square pyramid?

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The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant. given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.