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Elden [556K]
3 years ago
5

How long is the arc subtended by an angle of 7π/5 radians on a circle of radius 25 cm?

Mathematics
2 answers:
aev [14]3 years ago
8 0
There are 2pi radians in circle

so

circumference times arcinradians/2pi=areclength
c=2pir
c=2pi25
c=50pi

arc in radians=7pi/5
c times arcrad/2pi=
50pi times (7pi/5)/2pi=
50pi times 7/10=
35pi

it is 35pi cm or aprox 109.95574287564276334619251841478 cm

Semenov [28]3 years ago
4 0

Answer:

B) 35π

Step-by-step explanation:

35π is correct. (7π/5)(25)= 35π

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