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Two circles have radii 16cm and 23cm. What is the difference between their circu...


Question

Two circles have radii 16cm and 23cm. What is the difference between their circumference? take \(\pi = \frac{22}{7}\)

Options

A) 422.92cm

B) 149.92cm

C) 44.00cm

D) 43.96cm

The correct answer is 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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