Acylinder has a radius of 12.2 inches and a height of 6.1 inches. what is the volume of the cylinder to the nearest tenth in³?

a. 74.4 in³

b. 148.8 in³

c. 2852.3 in³

d. 4961.2 in³

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