Answer:
d = 3 & d = -3
Step-by-step explanation:
the equation to solve is ![d^2=9](https://tex.z-dn.net/?f=d%5E2%3D9)
Let's remember some properties of numbers and radicals.
Let's take the number 2 for example.
We know
![2^2=4](https://tex.z-dn.net/?f=2%5E2%3D4)
Also
as well
Since negative TIMES negative also gives us positive.
How do we get the reverse answer? Simple. We square root it. So we would have:
![\sqrt{4}=2](https://tex.z-dn.net/?f=%5Csqrt%7B4%7D%3D2)
and
-2, since we now know this.
Let's do this process and take square root of our equation to get:
![d^2=9\\d=\sqrt{9} \\d=3](https://tex.z-dn.net/?f=d%5E2%3D9%5C%5Cd%3D%5Csqrt%7B9%7D%20%5C%5Cd%3D3)
and also d = -3
Hence, two values of d are d = 3 & d = -3
The area is 14 because the triangles area is 6 and the rectangles area is 8
Step-by-step explanation:
area of rectangle(A)=l×b
44=x×11/3
132=11x
x=132/11
x=12cm
hope it helps.
Answer: Okay...what's your question?
Step-by-step explanation:
Answer:
The diameter is equal to ![44\ cm](https://tex.z-dn.net/?f=44%5C%20cm)
Step-by-step explanation:
we know that
The area of a circle (pizza) is equal to
![A=\pi r^{2}](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E%7B2%7D)
In this problem we have
![A=484\pi \ cm^{2}](https://tex.z-dn.net/?f=A%3D484%5Cpi%20%5C%20cm%5E%7B2%7D)
substitute and solve for r
![484\pi=\pi r^{2}](https://tex.z-dn.net/?f=484%5Cpi%3D%5Cpi%20r%5E%7B2%7D)
simplify
![484=r^{2}](https://tex.z-dn.net/?f=484%3Dr%5E%7B2%7D)
square root both sides
![r=22\ cm](https://tex.z-dn.net/?f=r%3D22%5C%20cm)
Find the diameter
![D=2r=2(22)=44\ cm](https://tex.z-dn.net/?f=D%3D2r%3D2%2822%29%3D44%5C%20cm)