Question

1The circumference of two concentric circles are 150 cm and 106 cm respectively. The difference between the radii ​

Answer 1

Answer:

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Answer 2

Answer:

Difference between their radii are 16.86 - 2.38 = 14.48

Step-by-step explanation:

circumference of circle 150cm = 2πr

150= 2 x 22/7 x r

$\frac{150*7}{22*2}$ = r

$\frac{105}{44}$ = r

r = 2.38

circumference of circle 106cm = 2πr

106 = 2 x 22/7 x r

$\frac{106*7}{22*2}$ = r

$\frac{742}{44}$ =r

r = 16.86.

Difference between their radii are 16.86 - 2.38 = 14.48