the radii of two circles are 19cm and 9 cm respectively find the radius of the circle which has circumference equal to the sum of circumference of the two circles
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Answered by
3
2πr1 + 2πr2 = 2πr3
2π(r1 +r2) = 2πr3
r1 + r2 = r3
19 + 9 = 28
hence, r3 = 28
2π(r1 +r2) = 2πr3
r1 + r2 = r3
19 + 9 = 28
hence, r3 = 28
Answered by
1
Answer:
Step-by-step explanation:
2π r 3 = 2π r 1 + 2 π r 2
r3 = r1 +r2
r3 = 19+9
r3 = 28
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