The circumference of a circle is 14π ft. What is the area, in square feet? Express your answer in terms of \piπ.

So then we can find r from the last equation like this:

And r is:

And then the area is given by:

And replacing the radius we got:

Then the final answer would be

Step-by-step explanation:

For this case we have the circumference of the circle given

We know that the circumference formula is given by:

So then we can find r from the last equation like this:

And r is:

And then the area is given by:

And replacing the radius we got:

Then the final answer would be

step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.