Question

MEDALS MEDALS MEDASLS


fill in the blanks please.

A circle is centered at the point (-3, 2) and passes through the point (1, 5). The radius of the circle is________
units. The point (-7, _____
) lies on this circle.

Answer 1

Are there any choices for the words?

Answer 2

nooo. :(

Answer 3

Okay, so you know a radius means the length between the middle and one side, and the diameter is the length from one side to the other.

Answer 4

Yes but i dunno how to figure out?

Answer 5

So knowing that, and knowing the center of the circle, (-3,2) and knowing where is ends, (1,5) how long would that be from (-3,2) to (1,5)?

Answer 6

http://prntscr.com/agu3qo

apply distacne formula and get the radius

Answer 7

2,3?

Answer 8

@xX_GamerGirl_Xx

Answer 9

@Keigh2015

Answer 10

The radius I believe would just be one number.

Answer 11

Use the formula
\[\large\rm (y-y_1)^2+(x-x_1)^2=r^2 \]
where (x1,y1) are the centre of the circle

Answer 12

okay i got 25 and 5? are those rght?

Answer 13

@fluffynose the pic i posted ...accordng to it (x1, y1) = (-3 , 2) and (x2 , y2) = (1, 5)
now apply the distance formual to get OP ...i.e the radius
\[OP = \sqrt{(-3-1)^2 + (2 - 5)^2}\]

Answer 14

remember OP is the radius :)

Answer 15

once u get the radius u can solve the 2nd part easily :))
@fluffynose

Answer 16

for 2nd part :))
OP = OQ = radius
http://prntscr.com/agug3j

Answer 17

@Keigh2015 yup thts correct :)