Mrs. hoffnagle's class is practicing skip counting by 30's . the first student said 30, the second said 60, and the third said 90. how many students counted if they ended at the number 420?

120

Step-by-step explanation:

It’s like counting by 3’s and adding a 0

3,6,9,12

30,60,90,120

10 you would take 50/ .2

step-by-step explanation:

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