Which of the following defines the ratio of pi? a-Pi is the ratio of the area of a circle to its radius.
b-Pi is the ratio of the area of a circle to its diameter.
c-Pi is the ratio of the circumference of a circle to its radius.
d-Pi is the ratio of the circumference of a circle to its diameter

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

what is the model?

step-by-step explanation: