Question

the circumference of a circle is 22 cm long. find its radius

Answer 1

circumference=2py r
22=2×22/7×r
22×7=2×22×r
154=44r
154/44=r
r=3.5cm

Answer 2

Answer: 3.5 cm

Step-by-step explanation:

Circumference = 2πr

22 = 2 × 22/7 × r

r = 22 × $\frac{7}{22}$ × $\frac{1}{2}$

r = 3.5 cm