3) A carpenter got given some free wooden planks. Some are 12m long and some are 18m long. She wants to cut them up so that she has
equal size planks to make using them easier. What size planks should
she cut them into to avoid wasting any wood?
What is it??

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

hreryryrranswer:

step-by-step explanation:

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step-by-step explanation:

it is a secret for it not to be compromised sorry

step-by-step explanation: