Which method can be used to find the area of the composite shape?

2 semicircles on each side of a rectangle.
Decompose the figure into one semicircle and one rectangle and add the areas.
Decompose the figure into one semicircle and one rectangle and subtract the areas.
Decompose the figure into two semicircles and one rectangle and subtract the areas.
Decompose the figure into two semicircles and one rectangle and add the areas.

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp