Question

diameter of the track is 4 mi. Last Tuesday, Laura ran 1/10 of a lap around the track. Approximately what distance did she run?
would it be 36 x 4 x pi????

Answer 1

where did 36 come from?

Answer 2

The circumference of the track is pi * diameter = 4 * pi
You want one tenth of 4 * pi

Answer 3

i assume that this is a circle?

Answer 4

if so what @kropot72 said is your formula

Answer 5

one lap = circumference

Answer 6

(1/10) of the circumference

0.1 * ( 2*pi*2) = approx 1.3 miles (1dp)

Answer 7

i got 1.26 thx

Answer 8

1.26 is right