Question

I don't know how to do part two and three. Can I have help.

Answer 1

A ) Midpoint formula
B ) Distance formula
C ) the form is (x-h)²+(y-k)²=r²

Where
(h,k) is the center of the circle
r is the radius

Answer 2

so B is (116, 40)

Answer 3

@SolomonZelman

Answer 4

Can someone further explain?

Answer 5

Circle Center is at X= -3 Y = +2
End Point is at X = 4 Y= 6

So the end point of the radius is 7 'x units' and 5 'y units' from the center.
So the length of the radius² = 7² + 5²
radius² = 74
radius = sqrt(74)
radius = 8.602325267

Answer 6

okay thank you am I correct about B?

Answer 7

Actually my answer for the radius length is part B.
And I should express it in radical form.

When you give the answer to B as (116, 40)
that is just a point. Am I right?

Answer 8

yes thats what I meant

Answer 9

sqrt (74) cannot be simplified any more than sqrt(74)

Part B says to find the radius. What does (116, 40) mean?

Answer 10

never mind about that I just really don't understand this.

Answer 11

Basically it is asking you to calculate the parts of a circle from the information given.
You are unfamiliar with doing this correct?

Answer 12

yes, I never learned it.

Answer 13

I always wonder why instructors assign these problems without giving any instruction on how to solve such problems.
Okay I guess it's time to explain some more huh?

Answer 14

yes please

Answer 15

I'll add some more to the graphic I drew.

Answer 16

okay

Answer 17

I redrew the graphic to show the circle drawn in place.
(Yes, I had to reduce the size of the graphic).

Answer 18

thank you

Answer 19

Okay now if we look at the new graphic you see the diameter of the circle.
Notice that the diameter we were given is NOT a diameter that travels in a nice horizontal direction. That would make things easy.
Anyway, I hope you can see how some of the information we are given is graphed. (the circle, the center, the diameter, etc)