Question

the radii of two circles are 19 CM and 9cm respectively. find the radius of the circle which has circumstances equal to the sum of the circle circumference of the two circles​

Answer 1

Answer:

Solution:

Using the formula of the circumference of circle C = 2πr, we find the radius of the circle.

Radius (r₁) of the 1st circle = 19 cm

Radius (r₂) of the 2nd circle = 9 cm

Let the radius of the 3rd circle be r.

Circumference of the 1st circle = 2πr₁ = 2π (19) = 38π

Circumference of the 2nd circle = 2πr₂ = 2π (9) = 18π

Circumference of the 3rd circle = 2πr

Given that,

Circumference of the 3rd circle = Circumference of the 1st circle + Circumference of the 2nd circle

2πr = 38π + 18π

2πr = 56π

r = 56π/2π

r = 28

Therefore, the radius of the circle that has a circumference equal to the sum of the circumference of the two given circles is 28 cm.

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Answer 2

Here is your answer mate,

Question,

the radii of two circles are 19 CM and 9cm respectively. find the radius of the circle which has circumstances equal to the sum of the circle circumference of the two circles

Answer,

Given,

radius of 1st circle =19 cm

radius of 2nd circle =9 cm

Answer,

• Radius of required circle is 28cm

• For process

Please check the attachment

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