Question

Find the circumference whose radius is
1. 14 cm
2. 10 cm
3. 44 cm ​

Answer 1

Answer:

1. 88 cm

2. 62.85 cm

3. 276.57 cm

Step-by-step explanation:

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

Circumference of the circle = 2πr

$\sf1) \: \: 2 \times \frac{22}{ \cancel7} \times \cancel{14} ^{2} = 44 \times 2$

= 88 cm

$\sf 2) \: \: 2 \times \frac{22}{7} \times 10 = \frac{22}{7} \times 20 = \frac{440}{7}$

= 62.85 cm

$\sf 3) \: \: 2 \times \frac{22}{7} \times 44 = \frac{22}{7} \times 88 = \frac{22 \times 88}{7}$

$\sf \frac{1936}{7}$

= 276.57 cm