Ryan played in 3 basketball games. He scored 18 points in the first game and 12 points in the second game. If he scored 42 points in all games combined, how many points did he score in the third game?

12points

Step-by-step explanation:

Let x be the number of points in the third game

His total number of points is 42

That is

18+12+x=42

30+x=42

x=42-30

x=12

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm

it would rotate about 180 degrees.