Question

The diameter of the circle is 9.7 m . Calculate the length of its circumference. Round to the nearest tenth and remember to use the appropriate unit of measurement .

Answer 1

30.4m

Explanation:

Diameter(D) = 2r (radius)

D = 9.7m

r = 9.7m / 2

= 4.85m

C = 2πr

= 2π × 4.85m

= 30.47344873982099m

rounding - Leave it as is if the digit in the tenth is 4 or lower

- round it up if it's 5 or higher.

~~ 30.4m