Friday

October 24, 2014

October 24, 2014

Posted by **Shan** on Sunday, December 5, 2010 at 4:32pm.

2.)Find the area of the circle of the above problem?

- algebra -
**Person_blah**, Sunday, December 5, 2010 at 4:41pm2) I'll start with this part of the problem first. You know the radius of the circle is 2.

And the area of a circle is pi*(radius^2)

So pi*(2^2) = 4*pi...

1) So first get a piece of paper and pencil. I'll wait.

Ok. Now that you have a paper and pencil draw the x-y coordinate plane (2 perpendicular lines, the horizontal is the x, the vertical is the y). Mark off 5 tick marks on each line. This will be good practice.

Using this coordinate plane, and knowing that the x and y values of the center of the circle are 1 and 3 respectively, plot this point. Then plot the points that are 2 to the left of the center, 2 to the right, 2 below the center, and 2 above.

Connect the 4 points around the circle, and you've drawn the circle.

The equation of a circle is as follows:

(x-h)^2 + (y-k)^2 = radius^2. where the center is (h, k).

If h is 1, k is 3, and radius = 2.... I think you can take it from here. Hope this helped. Peace out.

- algebra -
**Shan**, Sunday, December 5, 2010 at 4:48pmThanks!

**Answer this Question**

**Related Questions**

Math - The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle...

NEED MAJOR HELP! *QUADRATIC EQUATIONS* - Write the equation for the circle with ...

maths - 1) Circle centre (7,-2) passes through (-2,10). Calculate radius and ...

Math - I have a question my brother asked me but I need a math expert. You have ...

GEOMETRY - The diameter of a circle has endpoints P(–10, –2) and Q(4, 6). a.Find...

Math - The center of a circle is A(-3,3) an B(1,6) is in the circle. Find the ...

geometry - This one is confusing me. please help The diameter of a circle has ...

algebra - A few more question Id like for someone to check please. 1) what are ...

Algebra - 2. Write the equation of the circle in standard form. Find the center...

college algebra - write the equation of the circle in standard form find the ...