We know that
[area of a circle ]=pi*r²
diameter=4 in
r=4 in/2-----> 2 in
so
area=pi*2²-----> area of the circle=4*pi in²
the answer is
the area, in square inches, of the circle is <span>3.14 • 2²</span>
Answer:
4 feet
Step-by-step explanation:
We know the the area of a triangle can be represented as
.
Since the height is twice the base, we can substitute the value
in as
in the expression, making it
. If the area is 16, we can make the equation

Now to solve for b.

Hope this helped!
Answer:
4 inches
Step-by-step explanation:
Actual dimensions:
Length = 15 feet
Width = 12 feet
Scale dimensions:
Length = 5 inches
Width = x inches
Write a proportion:

When factoring, it's easier to "pick out" the GCF first because it makes it simpler to factor even further. Otherwise, you will be troubled with lots of numbers and variables, so it will just get confusing.
Answer D: The graph increases as x goes to -infinity and decreases as x goes to infinity