The circumference of two circles are in the ratio 3 : 7. Find the ratio of their areas.
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Answer:
9/49
Step-by-step explanation:
circumference = 2πr
circumference ratio = 2πr1/2πr2=3/7
r1/r2=3/7.....1
area =πr^2
area ratio = πr1^2/πr2^2 = r1^2/r2^2
from 1
r1^2/r2^2=(3/7)^2
9/49
hope it helps u
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