Well, we can’t solve it without knowing the radius. So find the radius from the
known area (144 × π).
Answer: Jennifer needs 2 × π × r = 2 × π × 12 = 24π = 75.4 units of fence.
She also needs to get a life!
2 What is the measure of angle x if l and m are parallel?
Remember those parallel lines cut by another line? The ones that are full of
congruent and supplementary angles? Draw a third parallel line right through the
middle of angle x and fill in the angles you know.