If a circle has a radius of 13 and a sector defined by a 7.4 degree arc, what is the area, in cm2, of the sector?

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms