Question

The ratio of the radii of two circles is 5:6. Find the ratio of their areas

Answer 1

Answer:

25:36

Step-by-step explanation:

area of circle /area of circle

=πr2/πr^2

=(5) ^2/(6) ^2

=26/36

=25:36

Answer 2

Answer:

Let r1 be radius of cone circle.

Let r2 be redius of other circle.

c1 be circumferences of one circle.

c2 be cirumferences of other circle.

r1/r2 =6/5

∴ c1 =2πr

c2 =2πr

∴

c =

2πr

2

2πr

1

2

c

1

c

2

c

1

=

r

2

r1/r2 =

c1/c2 = 6/5