Answer:
144°
Step-by-step explanation:
step 1
Find the measure of the central angle of the regular pentagon
Divide 360 degrees by 5 (the number of sides)

Let
c----> the center of the pentagon
we know that
m∠ECA=72°
m∠ACB=72°
therefore
m∠ECB=m∠ECA+m∠ACB
substitute the values
m∠ECB=72°+72°=144°
The measure of angle ECB is equal to the degrees that the pentagon rotate
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Answer:
What? Hey no no no yes what no no yes what yes yes
Given , <u>radius of circle is 1 inches </u>
We have to find circumference and area of the circle
Formula for finding area of circle :- πr²
Area :- 3.14×1² sq. inches
<u>Area :- 3.14 sq. inches </u>
Formula for finding circumference of circle :- 2πr
Circumference :- 2×3.14×1 inches
<u>Circumference :- 6.28 Inches</u>
Answer:
1
Step-by-step explanation:
all you do is multiple then devide