Geothermal energy is heat from inside the earth. Underground temperatures generally increase 9°c for every 300 meters of depth. How deep would a well have rounded be for the temperature to reach 216°C​

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

3x + 4y -25 =0 represents the amount of change sianna should recieve