The diameter of a circle is 20 miles. What is the circumference?

circumference = 20π miles (or ≈ 62.83 miles)

Step-by-step explanation:

The formula for the circumference of a circle is:

circumference = 2πr OR circumference = dπ

Since you are given the diameter, input that into the formula and the answer will be:

circumference = 20π

If you need to get rid of the π, the answer is about 62.83

you answer is a

step-by-step explanation:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)