Question

Find the approximate value of the circumference of a circle with the given radius. Use = 3.14. Round your results to one more decimal than in the given radius.

5.1 cm

C =

32.03 cm
32.02 cm
16.02 cm
16.01 cm

Answer 1

The 5.1 is the radius, correct?

Answer 2

yes

Answer 3

i think its 32.03 well i got 32.028 but if its rounded isnt it 32.03?

Answer 4

Circumference = 2πr = 5.1(2) x 3.14
5.1(2) = 10.2 x 3.14 ~ 32.03

Answer 5

That's exactly correct ^-^

Answer 6

You want to round up for numbers that are ≥5, and round down for numbers ≤4

Answer 7

thnx for the help :) @JosiahG

Answer 8

No problem ^^