Area of a circle is directly proportional to the square of radius of the circle while the circumference is proportional to the radius of the circle. This means that if the radius of a circle is increased x times, then its area will be increased to x^2 times the original area, and the circumference will increase to x times the original circumference.
Thus when the radius is doubled, or in other words if radius mad 2 time the original radius, the area of circle will become 2^2 = 4 time the original area. The circumference will become 2 times the original circumference.
We can calculate exact area and circumference of a circle from its radius using the following equations:
Area of circle = (pi/4)*r^2
Circumference of circle = 2*pi*r
Where r is the radius of the circle.
I know this is a lot, sorry.
Answer:
29
Step-by-step explanation:
4x+(x+35)=180
5x+35=180
5x=145
x=29
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Answer:
The discount is 29.95
Step-by-step explanation:
599 x .05= 29.95
Answer:
1 hour and 15 minutes
Step-by-step explanation:
$120 - $45 = $75
$75 ÷ $60 = 1.25 hours or and 1 hour and 15 minutes
