Roses circular garden needs to have new soil added down for the spring. She knows the diameter of the garden is 8 feet. How much total soul will she need to purchase?

Step-by-step explanation:

To find out how much total soil she needs requires that you find the area of the circular garden using the formula

If the diameter of the garden is 8 feet, then the radius of the garden is 4 feet.  Filling in the formula then:

That would either be 16π feet squared, or ≈50.265 feet squared

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."