What does the term “speed” describe? the cyclist who travels 20 kilometers per hour for 15 kilometers

the turtle that moves very slowly from the rock to the water

the car that wins the race

all of the above

half of a circle

explanation:

the arrow and the top of the circle is matching together. it is not a polygon because a polygon would always be the same shape. therefore, an half of a circle is called semicircle so you would find the radius of it.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !