Question

work out the circumference of a circle with a diameter 1.8cm . take pi to be 3.142 and give your answer to 1 decimal place ?

Answer 1

Circumference of circle= 2piR

Pi=3.14
Diameter= 1.8. Cm

C= 2x 3.14x 0.9
Or
C = Pi D
3.14x 1.8
C=5.65
Or
C= 5.7