1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LenaWriter [7]
2 years ago
9

Can anyone teach mee..................... ​

Mathematics
1 answer:
andrew11 [14]2 years ago
5 0

Answer:

(i) The name of the part of the circle, OQ is a radius

(ii) The radius of the sector QOR is 21 cm

Step-by-step explanation:

The given figure is a sector of the circle O

∵ Any sector of a circle formed from 2 radii and an arc

∴ OQ is a radius

(i) The name of the part of the circle, OQ is a radius

The rule of the length of an arc of a circle is L = \frac{\alpha }{360} × 2 π r, where

  • α is the angle of the sector
  • r is the radius of the circle

∵ The length of the arc QR is 22 cm

∴ L = 22

∵ The measure of the angle of the arc is 60°

∴ α = 60°

∵ π = \frac{22}{7}

→ Substitute them in the rule above

∵ 22 = \frac{60}{360} × 2 × \frac{22}{7} × r

∴ 22 = \frac{22}{21} r

→ Divide both sides by  \frac{22}{21}

∴ 21 = r

(ii) The radius of the sector QOR is 21 cm

You might be interested in
19) Liam has a free throw percentage of 0.64. If he takes 6 free throw shots in a game, what is the probability that he will mak
3241004551 [841]
B)0.0687 is the correct answer. 
8 0
3 years ago
The area of a rectangle in 24 units. A diagonal drawn from one corner to another divides the rectangle into two right triangles.
nlexa [21]

Answer:

12 sq u

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, assuming the shaded triangle is one of those two triangles, its area would be 12 sq u.

Why? Because its length would be the same as the retances, as would its height, and to find the area of a triangle, you'd do L*H/2 which would be 24/2=12 sq u

(っ◔◡◔)っ ♥ Hope this helped, have a great day! ♥

˜”*°•.˜”*°• ~Star •°*”˜.•°*”˜

7 0
2 years ago
Find the measure of c. A. 40 B. 70 C. 90 D. 50
Juliette [100K]

Answer:

D. 50

Step-by-step explanation:

a = 90° (angle subtended in semicircle)

a + c + 40° = 180° (by angle sum postulate of a triangle)

90° + c + 40° = 180°

c + 130° = 180°

c = 180° - 130°

c = 50°

4 0
3 years ago
What is the equation of the following line written in general form?
AlekseyPX

Answer:

add 1;6 and 6,2 hope this helps ;)

8 0
3 years ago
Which of the following can be used to prove that the triangle EFG is a right triangle.
Leviafan [203]
If you use a ruler and if it's more than 120° its not a right triangle it has to be 120°
8 0
3 years ago
Other questions:
  • How do you answer these questions
    14·2 answers
  • The function h(t)=16t^2+144 represents the height , h(t) , in feet , of an object from the ground at t seconds after it is dropp
    11·1 answer
  • Please help, this will just take a minute of your time ❤︎ (literally)<br>(Discriminant Worksheet)
    14·1 answer
  • HELP!!!!!plz!!!!!!ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    8·1 answer
  • The area of a square photo is 9 square inches. how long is each side of the photo?
    15·2 answers
  • Rewrite the expression using the distributive property and the gcf 35+42
    11·2 answers
  • Using Parallel Lines Find m 1 and m 2. Explain your reasoning.
    14·1 answer
  • What is 0.66% of 9,500 is
    9·2 answers
  • Pls help construct this for meee
    10·2 answers
  • What is 12/24 - 10/23
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!