3 years ago

2 concentric circles have radii 2cm and 3cm respectively, calculate the ratio of their areas

1 answer:

6 0

Answer:For the first circle the radius is 2cm and for the second circle the radius is 3cm,by taking the ratio of their areas:

πr^2:πR^2

π cancels out and we are left with only r^2:R^2

r=2cm and R=3cm

Therefore r^2:R^2=2^2:3^2

=4:9

The answer is 4:9

Step-by-step explanation:

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2 concentric circles have radii 2cm and 3cm respectively, calculate the ratio of their areas​

2 concentric circles have radii 2cm and 3cm respectively, calculate the ratio of their areas