Math, asked by karibasayyabv, 1 year ago

the radii of two circles are the 19 cm and 9 cm find the radius of the circle with circumference equal to the sum of the circumference of the two circles​

Answers

Answered by sushmathakur111998
8

Answer:28

Step-by-step explanation:

Sum of circumference of two circle =(2πr1)+(2πr2)

=2π(19+9)

=176

Radii of circle=(circumference)÷2π

=176÷(2π)

=28

Answered by Anonymous
4

radius of first circle = 19 CM

circumference of first circle = 2πr1

radius of second circle = 9cm

circumference of second circle =2πr2

now

circumference of both circle=2πr1+2πr2

= 2π(r1+r2)

=2 ×22/7 (19+9)

=2×22/7 (28)

= 2×22×4

= 176cm

Since circumference of both circle = circumference of bigger circle

2πr = 176cm

2×22/7×r = 176cm

44/7 r =176

r= 176 × 7

44

r= 28 cm

Hence the radius of bigger circle= 28cm.

hope it helps u

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