Ok, so the 4pi is indicating toward the arc length. Since the radius of the circle is 18, the circumference of the circle is 36pi. If you find the ratio of the arc length to the circumference, you can find the ratio of the indicated angle to the total number of degrees in a circle.
4pi/36pi = 1/9
(indicated angle)/360 = 1/9
(indicated angle = 40
The answer is the 4th choice, or 40 degrees.
Answer:
116 square cm
Step-by-step explanation:
Find the area of each shape
7*10=70
4*4=16
1/2(15)*4=30
70+16+30=116
Answer:
Look below
Step-by-step explanation:
Answer:
Step-by-step explanation:
N+10
K-15
18*2
6+(2*m)
3*n+8
(5*n)-17
2+(y^2)
(G^4)-9
The square root of 81 is 9 because 9x9=81 so thats definitely an integer its a rational number.
