Given:
A circle with diameter 9 cm.
To find:
The area of the circle.
Solution:
The area of a circle is:
...(i)
Where r is the radius.
We know that, the diameter of a circle is twice than its radius.
The diameter of the given circle is 9 cm.
Substituting 
in (i), we get
Therefore, the area of the given circle is 63.6.
Answer:
cos(θ) > 0
Step-by-step explanation:
In Quadrant IV, the cosine is positive.
__
In the attached, trig functions not listed are negative.
Answer:
30.5 feet
Step-by-step explanation:
The difference of a number q and 8: q - 8
Answer:
The difference between a number and five is negative two.
Step-by-step explanation:
n-5=difference between a number and five
=-2 means is negative two
