3. Find the surface area. 4 111 45 mm 30 mm 30 mm​

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

to complete this square you have to rotate about the origin 270 degrees clockwise.

the formula of a midpoint between a abd b: