The circumference of a circle is 31.4 feet. What is the area?

1 answer:

4 0

A ≈ 78.46 ft

To find the answer just look up the formula for finding area with circumference and plug in the circumference

You might be interested in

(80 POINTS) What rule describes a dilation with a scale factor of ½ and the center of dilation at the origin?

lesya [120]

Answer:

Step-by-step explanation:

(x, y) -> (1/2x, 1/2y)

When you dilate a side, point, etc, you are multiplying the original dimension by the scale factor. That is represented in option C: the original x and y are multiplied by the scale factor, 1/2! Hope that helps! :)

6 0

3 years ago

Read 2 more answers

A Web music store offers two versions of a popular song. The size of the standard version is

kicyunya [14]

2.4x+4.7(4x)=5936
Solve for x
X=280 standard version

4×280=1,120 high-quality version

5 0

3 years ago

6x+4y=12 into y=my+b

kirza4 [7]

6x + 4y = 12...subtract 6x from both sides
4y = -6x + 12 ...divide both sides by 4
(4/4)y = (-6/4)x + 12/4...reduce
y = -3/2x + 4 <== y = mx + b

7 0

2 years ago

Read 2 more answers

What is the constant of proportionality in the equation y = 5/9 x ?

Mazyrski [523]

The constant of proportionality is 5/9

y= kx where k is the constant of proportionality

y = 5/9 x

k = 5/9

6 0

2 years ago

A cold drink is poured out at 52°F. After 2 minutes of sitting in a 72°F room, its temperature has risen to 55°F. Find an equati

I am Lyosha [343]

Answer:

The model for the temperature of the drink can be written as

$T=72-20e^{-0.08t}$

Step-by-step explanation:

For a cold drink in a hotter room, we can say that the rate of change of temperature of the drink is proportional to the difference of temperature between the drink and the room.

We can model that in this way

$\frac{dT}{dt}=k*(T_r-T)$