A triangle has sides with lengths of 4 meters, 5 meters, and 7 meters. Is it a right triangle

The triangle is not a right triangle

Step-by-step explanation:

The sum of the squares of the side lengths do not equal the square of the hypotenuse:

4^2+5^2=7^2

16+25=49

41=49

41 does not equal 49, so this confirms my answer is true

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