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Mathematics

1 answer:

saul85 [17]3 years ago

3 0

Answer:

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Step-by-step explanation:

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Chapter : Circles 1 question

erica [24]

We can solve this question in 2 ways: either using degrees or converting the degrees into radians.

Since, the question says degrees itself and there is no specification of using radians only, so I have solved it using degrees itself.

Part (a):

Perimeter of sector ORS = 2*Radius + Arc RS = 2*21 + $60* \frac{ \pi }{180} *21 = \frac{ \pi }{3} *21 = 7 \pi$

Part (b):

Area of sector ORS = $\frac{60}{360} * \pi * 21^{2} = \frac{1}{6} * \pi *21*21= \frac{147}{2} \pi$

Area of sector POQ = $\frac{36}{360} * \pi * 14^{2} = \frac{1}{10} * \pi * 196 = \frac{196}{10} \pi$

Thus, area of shaded region
= Area of sector ORS - Area of sector POQ

= $\frac{147}{2} \pi - \frac{196}{10} \pi = \frac{735 - 196}{10} \pi = \frac{539}{10} \pi = 53.9 \pi$

5 0

2 years ago

I need help with this

Schach [20]

8- 1/3 quarts
4- 2/3 quarts

7 0

2 years ago

A cube is dilated by a factor of 2. How many times larger is the volume of the resulting cube than the volume of the original cu

Vladimir [108]

Answer:

Example:

Cube with sides: 3. V= 3x3x3= ?

Cube with sides: 6. V= 6x6x6=?

How many times bigger is the second answer? That’s it!

Step-by-step explanation:

8 0

2 years ago

N x n² da como resultado=

kykrilka [37]

N x n2 da como resultado

3 0

2 years ago

Read 2 more answers

Please help!!!!!!!!!!!!!!!

konstantin123 [22]

Here's a scenario that you can edit to your own advantage. You own a shirt shop. Each shirt sells for 15 dollars, and to make profit annually you need to sell $62,365 worth of shirts. If you've sold 2,000 shirts so far, how many shirts do you need to meet your quota. How many shirts on average per month would you have to sell?

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3 years ago