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2 years ago

Formula for finding perimeter/circumference of major sector plz no links in a hurry

Mathematics

1 answer:

Rainbow [258]2 years ago

3 0

Answer:

C = 2πr or C = πd

Step-by-step explanation:

Hope this helps :)

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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

IF YOU ARE SMART DO THIS PROBLEM NOT PEOPLE WHO DONT WANN HELP

Alexxandr [17]

Answer:

3.28ft

Step-by-step explanation:

Rectangular Prism Formula:

l*w*d = v

(plug in values)

2.6*1.4*d=11.94

3.64*d=11.94

d = 3.28ft

5 0

2 years ago

Given f(x) = 8x + 25, find x when f(x) = 9.

elixir [45]

Answer:

-2?

Step-by-step explanation:

7 0

3 years ago

Subtract -5x^2+7x+1 from 8x^2+x-10

melomori [17]

13x^2 + 8x - 9
I hope this helps

4 0

3 years ago

Read 2 more answers

PLZ HELP!!!!!!!!!!!!

Nezavi [6.7K]

Answer:

1. 0.5

2. 0.25

3. 0.33333...

4. 0.2

5. 0.75

6. 0.666...

7. 0.4

8. 0.375

9. 0.444...

10. 0.28571428571429

Step-by-step explanation:

6 0

2 years ago