Could someone please answer this? the first person who answers it correctly will be marked as brainliest

Find the area of the regular hexagon if a side is 20 cm.

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?