A blood bank needs 5 people to help with a blood drive. 10 people have volunteered. Find how many different groups of 5 can be formed from the 10 volunteers.

2 different groups

Step-by-step explanation:

10 people divided by 5 people per group equals 2 groups

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