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 =
× 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 = 
→ Substitute them in the rule above
∵ 22 =
× 2 ×
× r
∴ 22 =
r
→ Divide both sides by 
∴ 21 = r
(ii) The radius of the sector QOR is 21 cm
(-1,8) is the correct answer I’m pretty sure
The ratio is 1 to 68.8 or 1 : 61.8 and you're looking for 6 : x so all you have to do is multiply 61.8 by 6 and you get 370.8
Answer:
180
Step-by-step explanation:
V=1/3Bh=1/3*1*2=2/3
20*6=120
120 divided by 2/3 is 180
Part A - 14 sections of fencing
Part B - 0.9165 the distance between each stake