Cho hai tập hợp   ; 1 A m m = +
và
 ) B = 0;3 .
Tìm tất cả các giá trị thực của tham số m để
A B  = .

idk what the heck he answer is, i’m just putting this here so i finish my account

srry ask agian

step-by-step explanation:

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet