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ComicSans10
02.09.2020 •
Mathematics
Find the length of the arc
A.8 pie ft
B.32 pie ft
C.64 pie ft
D. 361 pie/ 12 ft
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Ответ:
A. 8π ft.
Step-by-step explanation:
perimeter of a circle = 2 π r
where r = 16
find: length of arc.
since the arc is 1/4 of a circle. just multiply it with the formula above.
arc length = 1 x 2 π 16
4
arc length = 8π ft.
Ответ:
Explanation:
The perimeter around the circle is known as the circumference
The full circumference of a circle with radius r is
C = 2*pi*r
In this case, r = 16 is the radius, so,
C = 2*pi*r
C = 2*pi*16
C = 2*16*pi
C = 32pi
is the full distance around the circle. But we only want 90/360 = 1/4 of that total distance. So take 1/4 of 32pi to get
(1/4)*32pi = (1/4*32)pi = 8pi
The arc length is exactly 8pi feet long
Approximately this is about 25.13274 feet
Ответ:
who what where when why how. Im so hungry i can eat that cow