Answer:
1)
Area
2)
1/2
3)
Radius
Step-by-step explanation:
We know that for any circle with radius r the formula for the area and circumference of the circle is given as:
Area of circle=πr².
and circumference of circle = 2πr.
Hence, to describe the relationship between the area of a circle and its circumference.
The Area of circle is 1/2 times the radius times the circumference.
( Since,
Area=1/2 × r× 2πr
Area=πr² )
Answer:
Variable
Step-by-step explanation:
If you can substitute a unknown variable with another expression that is equal, you can then solve for another variable, and with that equal expression, solve for the first variable.
There are 12 inches in one foot:
1 ft = 12 in
We want to find how many feet are in 5000 inches:
x ft = 5000 in
Set up a proportion:
1/12 = x/5000
Cross multiply:
12x = 5000
Divide by 12:
x is about 416.67 feet.
Change the order of integration. The region over which you're integrating can be equivalently described by the set of points in the plane, 
.
Then the integral becomes
Substitute 
, 
:
