The area of a circle is 36π in². What is the circumference, in inches? Express your answer in terms of \piπ.

Step-by-step explanation:

We are given that

Area of circle=

We have to find the circumference of circle in inches.

We know that

Area of circle=

Using the formula

in

Circumference of circle=

Using the formula

Circumference of circle=

Hence, the circumference of circle=

- "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."