Question

Find the radius of the circle whose circumference is 66 cm

Answer 1

c=2πr
66=2*22/7*r
2*22*r=66*7
44r=462
r=462/44
r=10.5m

please mark as brainliest

Answer 2

The radius of sphere is 10.5 cm

Step-by-step explanation:

Circumference of circle =$2 \pi r$

Circumference of circle = 66 cm

So, $2 \pi r = 66$

$2 \times \frac{22}{7} \times r = 66$

$r=\frac{66 \times 7}{2 \times 22}$

r=10.5 cm

Hence the radius of sphere is 10.5 cm

#Learn more:

Find the radius of a circle whose circumference is : a) 44 cm b) 66 cm

https://brainly.in/question/3365354