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

User PlinyTheElder
by
7.8k points

2 Answers

4 votes

Answer:

B) 35π

Explanation:

35π is correct. (7π/5)(25)= 35π

User Alfonso De La Osa
by
7.8k points
4 votes
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

User Sharita
by
7.5k points
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