It should be n+4=3n. Hope this helps
Answer:
x = 15.49
Step-by-step explanation:
a2+b2=c2
11^2+x^2=19^2
121 =x^2 = 361
x^2 = 240
x = 15.49
Answer:

Step-by-step explanation:
The area of a circle is given by :

Where
r is the radius of the circle.
If we talk about the area of half of the circle, it means we have to half the area such that,

Hence, this is the required solution.
The dot is not filled and it is between the 5 and 6