Question

The diameter of two circles are 36 cm and 20 cm respective -- Piese area of the c
which has circumference equal to the sum of the circunferences of the two circles.
find ratio of area of this big circle and the sum of area of two s nalí eszcie.
10​

Answer 1

Answer:

Diameter of circle = 36 cmDiameter of circle ⭕ = 20 cmRadius of circle = 18 cmRadius of circle ⭕ = 10 cmSum of circumference of circle & circle ⭕→

Step-by-step explanation:

I hope this helps you

Answer 2

Answer:

i hope it will be very helpful to u

Step-by-step explanation:

Given-

The diameter of the two circles are

d

1

=36 cm⇒ radius r1 =

2

d1 =

20

36

cm=18 cm and

d2

=20 cm⇒ radius r

2

=

2

d

2

=

2

20

cm=10 cm.

∴ The circumference C

1

=2πr

1

=2π×18cm=36π cm and

The circumference C

2

=2πr

2

=2π×10 cm=20π cm

So C

1

+C

2

=(36+20)π cm=56π cm.

This is the circumference C of the resulting circle.

∴C=C

1

+C

2

=56π cm

Let the radius of this circle be r.

Now, the radius of a circle =

2π

circumference

∴r=

2π

56π

cm=28 cm.