Question

Find the radius of a circle whose circumference is 28

Answer 1

Step-by-step explanation:

answer is

$49 \div 11$

Answer 2

Step-by-step explanation:

$given \: \\ circumference \: = 28 \\ use \: formula \: 2pi \: r \\ circumference = 2pi \: r \\ 28 = 2 \times \frac{22}{7} \times r \\ \frac{28 \times 7}{2 \times 22} = r \\ r = \frac{49}{11}$