Answer:

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Step-by-step explanation:

Here is your answer

Answer:

Radius of circle is 33cm

Step-by-step explanation:

Let the radius of a circle be r.

∴ Circumference of a circle = 2πr

Let the radii of two circles are r and r whose values are 15 cm and 18 cm respectively. i.e. r1 = 15 cm and r2 = 18 cm

Now, by given condition, Circumference of circle = Circumference of first circle + Circumference of second circle

⇒ 2πr = 2πr1 + 2πr2 ⇒ r = r1 + r2 ⇒ r = 15 + 18

∴ r = 33 cm

Hence, required radius of a circle is 33