Find the area of the shaded sector.

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

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What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi