A sector with arc measure 72º has an area of 80 square feet. Determine
the radius of the circle.
A 18 ft
C 12 ft
B 20 ft
D 16ft

Let's find the Radius ~

or

I hope you understood the whole procedure, let me know if you have doubts ~

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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

answer: what is the question you're trying to ask?

step-by-step explanation: