Answer:
Area of sector = 21.195 cm²
length of arc = 4.71 cm
Step-by-step explanation:
Given:
Radius of circle (r) = 9 Cm
Angle at O = 30°
Find:
Area of sector.
length of arc.
Computation:
⇒ Area of sector = [θ/360]πr²
Area of sector = [30/360]3.14(9)²
Area of sector = 21.195 cm²
⇒ length of arc = [θ/360]2πr
length of arc = [30/360]2(3.14)(9)
length of arc = 4.71 cm
Answer:
23
hope it helps u :)
Step-by-step explanation:
2x+13
x=5
=2×5+13
=10+13
=23
Answer:
1.6
Step-by-step explanation:
The value of log 43 to the nearest tenth is <em>1</em><em>.</em><em>6</em>
Answer:
Step-by-step explanation:
vtrtv
Answer:
<em>5</em><em> players participated in the tournament.</em>
Step-by-step explanation:
In a small chess tournament, 20 matches were played.
Let us assume that n number of players participated in the tournament
As in each game 2 players play, so the number of ways they can play is,
As they played 2 games with every other participant in the tournament.
So the total number of games is,
But it is given to be 20, so
As , so we get n=5.
Therefore, 5 players participated in the tournament.