Circles don't have volume, but they do have area.
The area of any circle is ...
(pi) x (the circle's radius)² .
The circle's radius is 1/2 of its diameter.
So for the circle in the question,
Radius = 30-ft
Area = (pi) x (900 square ft) = <em>2,827 square feet</em> (rounded)
Answer:
#1
Step-by-step explanation:
Use the formula y=C(1-r)^x
=135(1-what the rate of change is )^5*7
Answer:
a = and b =
Step-by-step explanation:
As we know, the radius of the unit circle is 1 unit (it is the hypotenuse in the right triangle, the blue line)
We use trigonometric formulas to find out a and b
- Sin(45) = opposite side / hypotenuse
<=> Sin(45) = b / 1
<=> b= Sin(45)*1 =
- Cos(45) = adjacent side / hypotenuse
<=> Cos(45) = a / 1
<=> a = Cos(45)*1 =
So: a = and b =