:: what is the surface area of a cylinder that is 12 feet high and has a radius of 2 feet (round to the nearest whole number)? a) 81.6 ft.2. b) 163 ft.2. c) 176 ft.2. d) 250 ft.2.

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

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