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Vesnalui [34]
3 years ago
15

How do you solve for an area of a circle?

Mathematics
2 answers:
nikitadnepr [17]3 years ago
6 0

well the formula for the area of a circle is A =\pi r^2

r is for the radius

which is half the size or number of the diameter

so ex. lets say that the diameter of a circle is 10, so that makes the radius 5

A = \pi 5^2

A = \pi * 25

A = 78.54

Ta -Da!!

Note: sometimes is the test ask you to replace \pi for 3.14, it would still work

vampirchik [111]3 years ago
4 0

Answer:

Identify the radius of a circle. The radius is the length from the center of a circle to the edge of the circle. You can measure this in any direction and the radius will be the same. The radius is also one half of the diameter of a circle. The diameter is the line segment that passes through the center and connects opposite sides of the circle.[1]

The radius will generally be provided to you. It can be difficult to measure to the exact center of a circle, unless the center is already marked for you on a circle drawn on paper.

For this example, assume that you are told that the radius of a given circle is 6 cm.

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If Sarah was going to the mall with her three friends. Sarah friends spent 50 dollars each and Sarah spent twice as more as her
Doss [256]
Each friend spent $50 (50+50+50= 150)
Sarah spent twice as much as them150*2=300
altogether they spent $150+$300= $450



(just edited sorry for previous mistake)
7 0
4 years ago
Read 2 more answers
A museum groundskeeper is creating a semicircular statuary garden with a diameter of 29 feet. There will be a fence around the g
azamat

Answer:

The fencing will cost $330.09

Step-by-step explanation:

First we have to calculate the perimeter of the semicircle for that we use the following formula:

d = diameter = 29ft

s = semicircle

π = 3.14

s = d * 1/2 * π

we replace the values that ​​we know

s = 29ft * 1/2 * 3.14

s = 45.53ft

Now we multiply the number of feet by the price of what comes out 1 foot of fence

45.53 * $7.25 = 330.0925

Round to the nearest hundredth

$330.0925 = $330.09

4 0
3 years ago
Apple weights in an orchard are normally distributed. from a sample farmer fred determines the mean weight of a box of apples to
Serjik [45]
<span>Mean = 270 Standard deviation = 10 x = 255 Formula for z-score, z = (x - mean)/SD z = (255 - 270) / 10 => z = -15 / 10 => z = -1.5 So by referring to z-table, -1.5 correlates to 0.0668 that implies to 0.07 So 7% of the boxes of Apples weight less than 255oz. The percentage of boxes is in the range of 255 oz and 270 oz, Now calculating the requiring percentage 50% - 7% = 43%</span>
7 0
4 years ago
Read 2 more answers
What is the equation of the line through the origin and (2, 5)?
just olya [345]

Answer:

y=\frac{5}{2}x

Step-by-step explanation:

\frac{rise}{run}

The point is up 5 and went 2 to the right. We can use the equation rise over run to solve for the slope.

4 0
3 years ago
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Emma needs 2 pounds of ground meat to make a meatloaf. She goes to Brodies and finds one package of meatloaf with 2.56 pounds an
rusak2 [61]

Answer:

package with 2.09 pounds

Step-by-step explanation:

When rounding to the nearest whole number, if the first number after the decimal point is equal or greater than 5, add 1 to the number before the decimal. If this is not the case, add 0 to the number before the decimal point.

to round 2.56 to the nearest whole number equals 3.

While to round 2.09 to the nearest whole number equals 2.

Because Emma needs 2 pounds, she would go with 2.09 pounds

4 0
3 years ago
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