Question

Need some help please...What is the radius for the circle given by the quation...(x-2)^2+y^2=14..Round your answer to the nearest thousandth.

Answer 1

general equation of circle:

\[(x-h)^{2} + (y-k)^{2} = r^{2}\]

the center is the point (h,k) and the radius is r.

r = sqrt(r^2)

Answer 2

so now what should i do

Answer 3

well. what is r^2 of your circle if you compare it to the general equation?

Answer 4

i'm not sure i hate conic sections :(

Answer 5

the equation is already in it's general form. the center is at (2, 0) and r^2 = 14.

to find r you'll need a calculator

Answer 6

i'm not at school i dont have one :/

Answer 7

if you're on the internet you do :). or even just on a computer. i bet you have a cellphone in your pocket :P.

regardless. sqrt14 = 3.741657387

Answer 8

i thought i would need a scientific one :( how could i round tht to the nearest thousandth?

Answer 9

the thousanth's in the third decimal (tenths, hundreths, thousandths, ten thousannths, ect).

Answer 10

to round you look at the number after the thousanths. if its > 5 you round up. < 5, you leave as is

Answer 11

im so lost

Answer 12

the answer is 3.742. we rounded up

Answer 13

sorry im such a pain lol

Answer 14

lol no problem. i'm here to help

Answer 15

thank you :)