A= C^2/ 4 pie
= 18.84^2 / 4 pie
= 28.25
Answer:
The answer is 2pi
Step-by-step explanation:
To find the area of a cirlce, use the equation ( pi * r^2 ) so for a semi circle, which is half, simply divide that by 2. Plug in 2 for radius and you get 4pi/2 which simplifies to 2pi.
A.a1 is the first term in the sequence
D.n is the index of sequence
is the correct answer....
HOPE IT HELPS YOU '_'
4.
(3^2) + b^2= (Sqrt10)^2
9+b^2=10
9-9+b^2=10-9
b^2=1
b= sqrt 1= 1
5.
(Sqrt 17)^2=4^2 + b^2
17=16+b^2
17-16=16-16+b^2
1=b^2
b= sqrt 1= 1
It is the nearest thousandth which is the third decimal place. The answer would be .387 unless the 1 was a 5 or higher then it would be .388