Question

find the circumference of circle whose diametre is 10 cm.​

Answer 1

Answer:

diameter=10 cm

radius=5 cm

circumference= 2πr

2×3.14×5

31.4 cm

Answer 2

Answer:

$d = 10cm \\ r = \frac{10}{2} \\ r = 5cm \\ use \\ \pi = 3.14 \\ circumference = 2\pi \: r \\ = 2 \times 3.14 \times 5 \\ = 10 \times \frac{314}{100 } \\ = \frac{314}{10 } = 31.4cm$