Sphere radius 7 inches what's the volume

The volume of sphere is 1436.03 inches³.

Step-by-step explanation:

Given:

The radius of sphere = 7 inches.

Now, to find the volume.

So, to get the volume we put the formula:

Taking the value of π = 3.14

Therefore, the volume of sphere is 1436.03 inches³.

Step-by-step explanation: To find the volume of the sphere, start with the formula for the volume of a sphere.

Volume =

Notice that our sphere has a radius of 7 inches so plugging into the formula, we have .

Start by simplifying the exponent. (7 in.)³ is equal to 7 inches x 7 inches x 7 inches or 343 in³ so we have .

Next, 4 x 343 is 1,372 which gives us . Notice that 1,372 doesn't divide by 3 so this is our final answer for the volume of the sphere.

- "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."