If f(x)=2x^2+1,what is f(x) when x=3

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2

How do i find the missing angle measure in a polygon

Here is another math questions. i will keep asking different questions. 4^2x=6