Atoy company manufactures arcade games. they are marketing a new pinball machine to children. it is similar in size to the adult version of the same game. both the adult and child models are shown below.

if the perimeter of the adult pinball machine is 177 inches, what is the length, in inches of segment line g prime a prime?

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b