Using π = 22/7, what is the circumference of a circle with radius 21 cm?
Note
Circumference means the distance around the circle. Use C = 2πr with π = 22/7: C = 2 × 22/7 × 21 = 132 cm.
Using π = 22/7, what is the circumference of a circle with radius 21 cm?
Circumference means the distance around the circle. Use C = 2πr with π = 22/7: C = 2 × 22/7 × 21 = 132 cm.