I. The radii of two circles are 19 cm and 9 cm respectivelyFind the ra

1.	I. The radii of two circles are 19 cm and 9 cm respectivelyFind the radius of the circle which has circumference equalto the sum of the circumferences of the two circles.
Answer» Radius (r1) of 1stcircle = 19 cm Radius (r2) or 2ndcircle = 9 cm Let the radius of 3rdcircle ber. Circumference of 1stcircle = 2πr1= 2π (19) = 38π Circumference of 2ndcircle = 2πr2= 2π (9) = 18π Circumference of 3rdcircle = 2πr Given that, Circumference of 3rdcircle = Circumference of 1stcircle + Circumference of 2ndcircle 2πr= 38π + 18π = 56π → r = 28 cm The answer to this question is 28. so easy the answer to this question is actually 28cm. don't forget the units

I. The radii of two circles are 19 cm and 9 cm respectivelyFind the radius of the circle which has circumference equalto the sum of the circumferences of the two circles.

Answer»

Radius (r1) of 1stcircle = 19 cm

Radius (r2) or 2ndcircle = 9 cm

Let the radius of 3rdcircle ber.

Circumference of 1stcircle = 2πr1= 2π (19) = 38π

Circumference of 2ndcircle = 2πr2= 2π (9) = 18π

Circumference of 3rdcircle = 2πr

Given that,

Circumference of 3rdcircle = Circumference of 1stcircle + Circumference of 2ndcircle

2πr= 38π + 18π = 56π

→ r = 28 cm

The answer to this question is 28. so easy

the answer to this question is actually 28cm. don't forget the units