If the ratio of diameter of two circles is 3:7. Find the ratio of their circumferences.
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Answered by
0
Answer:
3:7
Explanation:
phi×d/phi×D
d=3x
D=7x
Answered by
1
Answer:3:7
Explanation:
D1/D2=3:7
Divide by 2 on both side
D1/2/D2/2=3/2/7/2
R1/R2=3:7. (1)
2*22/7*R1/2*22/7*R2=3:7
R1/R2=3:7. (2)
From eqn (1),(2)
2*22/7*R1/2*22/7*R2=3:7. ANS
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