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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 $$\pi = \frac{22}{7}$$

A) 422.92cm

B) 149.92cm

C) 44.00cm

D) 43.96cm

### 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

## Dicussion (1)

• 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