The ratio between the radii of two circles is 5:7 find the ratio between their circumferences and areas
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Answered by
12
r:R = 5:7
Ratio of circumferences
2×pi×r : 2×pi×R ( 2 and pi gets cancelled )
= r:R = 5:7
Ratio of areas
Pi×r^2 : pi×R^2
= r^2 : R^2
= 25:49
Ratio of circumferences
2×pi×r : 2×pi×R ( 2 and pi gets cancelled )
= r:R = 5:7
Ratio of areas
Pi×r^2 : pi×R^2
= r^2 : R^2
= 25:49
Answered by
2
R1/R2=5/7
C1/C2=2PIR1/2PIR2=R1/R2=5/7=5:7
PIR1sq/PIR2sq=[5/7]sq=25/49=25:49
C1/C2=2PIR1/2PIR2=R1/R2=5/7=5:7
PIR1sq/PIR2sq=[5/7]sq=25/49=25:49
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