Two circles have radii 16cm and 23cm. What is the difference between their circumference? take…

Two circles have radii 16cm and 23cm. What is the difference between their circumference? take (pi = frac{22}{7})
  • A.
    422.92cm
  • B.
    149.92cm
  • C.
    44.00cm
  • D.
    43.96cm
Correct Answer: Option C
Explanation

r = 16, R = 23; 2(pi R – 2 pi r)
= 2(pi(R – r))
= 2 x (frac{22}{7} (23 – 16))
= 2 x (frac{22}{7} times (7))
= 44cm

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