Find the arc length of the semicircle.
Either enter an exact answer in terms of n pi or use 3.14 for n pi and enter your answer as a decimal.
units.
* this is from Khan academy and the lesson is about ( circumstance of part of circles) PLEASE HURRY AND HELP ME

12.56

Step-by-step explanation:

Radius = 8/2 = 4

Arc length = pi × r

= 3.14 × 4

= 12.56

343t464564435rri76i6u

step-by-step explanation:

because i said it is

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.