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Sonbull [250]
3 years ago
12

The circumference of a circle is 8π cm. What is the RADIUS of the circle?

Mathematics
2 answers:
Irina18 [472]3 years ago
8 0

The formula for radius is R=\frac{C}{2\pi }.

First we need to see what 8*π is, put it in your calculator and you will get . So now we know the exact circumference, so now put that into the equation to find the radius.

R=\frac{25.1327412287}{2\pi } =4

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY!

- Cutiepatutie ☺❀❤

damaskus [11]3 years ago
8 0

Answer:

The answer is, 4 cm

Step-by-step explanation:

The radius of a circle can be calculated using the circumference, to find it we will use the following formula:

r =   \frac{C}{2\pi }

we have to;

\pi = 3.14 (it is a cost)

C = 8\pi

C = 8 × 3.14

C = 25.12

then we replace in the formula;

r =   \frac{25.12}{2\pi }

r =  \frac{25.12}{2*3.14}

r =  \frac{25.12}{6.28}

r = 4.

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Last year, a women's professional organization made two small-business loans totaling $28,000 to young women beginning their own
igor_vitrenko [27]

Answer:

$7,000 at a rate of 7% and $21,000 at a rate of 14%.

Step-by-step explanation:

Let x be amount invested at 7% and y be amount invested at 14%.

We have been given that a women's professional organization made two small-business loans totaling $28,000. We can represent this information in an equation as:

x+y=28,000...(1)

The interest earned at 7% in one year would be 0.07x and interest earned at 14% in one year would be 0.14x.

We are also told that the organization received from these loans was $3,430. We can represent this information in an equation as:

0.07x+0.14y=3,430...(2)

Form equation (1), we will get:

x=28,000-y

Upon substituting this value in equation (2), we will get:

0.07(28,000-y)+0.14y=3,430

1960-0.07y+0.14y=3,430

1960+0.07y=3,430

1960-1960+0.07y=3,430-1960

0.07y=1470

\frac{0.07y}{0.07}=\frac{1470}{0.07}

y=21,000

Therefore, an amount of $21,000 was invested at a rate of 14%.

x=28,000-y

x=28,000-21,000

x=7,000

Therefore, an amount of $7,000 was invested at a rate of 14%.

8 0
4 years ago
HELP PLEASE !!!!!!!!!!!!!!!
nadya68 [22]

Answer:

x=30

Step-by-step explanation:

if 30 x 4 = 120 amd 2 = 30 = 60 then 60+120=180

6 0
3 years ago
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