How long is the arc intercepted by two pi over 3 rad central angle in a circle with radius 7 feet

4.67 ft

Step-by-step explanation:

An arc is simply a portion of the circumference of a circle.

To find the length of an arc, we simply need to apply the formula:

where α = angle subtended by the arc = rads = degrees = 38.2°

r = radius of the circle = 7 ft

Hence, the length of the arc is:

The length of the arc is 4.67 ft

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)