Question

the radii of two circles arc 13 cm and 6 cm find the radius of the circle which has circumference equal to sum of the circumference of the two circle​

Answer 1

Answer:

Step-by-step explanation:

Circumference of the circle having radius = 13cm

Here, r = 13 cm

Circumference of circle = 2πr

2π × 13

= 26cm

On the other hand ,

Circumference of circle having radius 6cm

Here, r = 6cm

Circumference of circle =2 or

2π × 16 = 12 πcm

Sum of both the circumferences of circle.

26π + 12 π = 38π cm

Let r be the radius of the required circle whose circumference is 38π cm.

[sum of the both circumference of circle.]

Next ,

2 πr = 38π

r = 38 / 2

r = 19cm

Hence, radius of the new circle is 19 cm.

Hope it helps!

Answer 2

Step-by-step explanation:

The radius of new circle will be 19 cm