Gabrielle's age is two times Mikhail's age. The sum of their ages is 21 . What is Mikhail's age?

let the age be x and 2x

2x+x=21

3X=21

X=7

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