The radius is 3
center is (-3,3)
Step-by-step explanation:
start at (0,0) go left 3 then up 3 put a point there. Then from that point go up, left, right, and down 3. It should be a circle.
Answer:
3. 91.125
4. 30.375
Step-by-step explanation:
just multiply all of the sides
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Answer:
36,934,650
Step-by-step explanation:
Answer:
314 square feet
Step-by-step explanation:
we know that
The area that will be covered by the spray of the quarter-circle sprinkler head, is equal to the area of a quarter circle with radius of 20 feet
so
The area of a quarter circle is
![A=\frac{1}{4}\pi r^{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B4%7D%5Cpi%20r%5E%7B2%7D)
we have
![r=20\ ft](https://tex.z-dn.net/?f=r%3D20%5C%20ft)
![\pi =3.14](https://tex.z-dn.net/?f=%5Cpi%20%3D3.14)
substitute
![A=\frac{1}{4}(3.14)(20)^{2}=314\ ft^2](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B4%7D%283.14%29%2820%29%5E%7B2%7D%3D314%5C%20ft%5E2)