the radi of two circles are 19 cm nd 9 cm
Answers
Answered by
1
Step-by-step explanation:
Let the radius of required circle =r cm
Radius of 1st circle r
1
=9 cm
Radius of 2nd circle r
2
=19 cm
As per the question
Circumference of the required circle = Sum of circumference of two circles
Circumference of small circle =2πr
1
=2π×9
=18π
Circumference of small circle =2πr
2
=2π×19
=38π
Now,
Circumference of the required circle = Sum of circumference of two circles
2πr=18π+38π
2πr=58π
r=
2π
56π
r=28 cm
Hence, radius of new circle is 28 cm.
Answered by
0
Step-by-step explanation:
see the attachment u will get ur answer
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