Question

An arc length 4 feet subtends central angle theta in a circle with a diameter 9 feet
a)determine the exact radian measure of theta
b)express the degree of theta in degrees ,minutes,and seconds to the nearest tenth.
c)determine the area of secto with central angle theta
d)determine the perimeter of the sector

Answer 1

looks so

Answer 2

ok, well assuming it was correct, what is the circumference of the circle?

Answer 3

360?

Answer 4

no, circumference = pi * diameter
and our diameter is 9
so circumference =?

Answer 5

i got 0.34/ 0.35