All categories

2 years ago

The circumference of a circle is 9m What is the area of the circle?

Mathematics

1 answer:

vazorg [7]2 years ago

3 0

Answer:

Cai on kgpkvugcg7 vgu ygvhy6vgvh7

You might be interested in

Lines DE and AB intersect at point C.

alexandr402 [8]

Answer:

Step-by-step explanation:

2x+2+5x+3=180 (angles on a straight line)

7x+5=180

7x=180-5

7x=175

x=25 (dividing both sides by 7)

3 0

2 years ago

The sector COB is cut from the circle with center O. The ratio of the area of the sector removed from the whole circle to the ar

mafiozo [28]

Answer:

$Ratio = \frac{R^2 - r^2 }{ r^2}$

Step-by-step explanation:

Given

See attachment for circles

Required

Ratio of the outer sector to inner sector

The area of a sector is:

$Area = \frac{\theta}{360}\pi r^2$

For the inner circle

$r \to radius$

The sector of the inner circle has the following area

$A_1 = \frac{\theta}{360}\pi r^2$

For the whole circle

$R \to Radius$

The sector of the outer sector has the following area

$A_2 = \frac{\theta}{360}\pi (R^2 - r^2)$

So, the ratio of the outer sector to the inner sector is:

$Ratio = A_2 : A_1$

$Ratio = \frac{\theta}{360}\pi (R^2 - r^2) : \frac{\theta}{360}\pi r^2$

Cancel out common factor

$Ratio = R^2 - r^2 : r^2$

Express as fraction

$Ratio = \frac{R^2 - r^2 }{ r^2}$

6 0

2 years ago

Which statements about the graphs of functions g(x) = 4x and f(x) = x are true? Select all that apply.

Makovka662 [10]

Answer:

Step-by-step explanation:

5 0

2 years ago

Estimate 43% of 117. (2 points)<br> Show your work to

finlep [7]

Answer:

Let's say 50

Step-by-step explanation:

40% of 100 is 40

50% of 117 is about 59

so number should be a somewhere in between.

8 0

1 year ago

Math homework please help

Viktor [21]

the first on is -42

the second one is -80

the last on is -88

3 0

2 years ago