−t=9(t−10)minus, t, equals, 9, left parenthesis, t, minus, 10, right parenthesis
t =t=

a 10 percent increase

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

i would say true? if the unit was informational and it "refreshed your understanding", then true.