The radius of a circular disc is 5.8 inches. find the circumference .use 3.14 for n
a) 18.121 in
b) 36.424 in
c) 42.34 in
d) 54.63 in

It is B.
The formula for the circumference of the circle is Pi x diameter. Since you only have the radius, you must times the radius by two to get the whole diameter. The diameter is 11.6. Now 11.6 times Pi equals 36.424

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.