4 years ago

If (-4,-2) and (2,6) are opposite points on a circle, what is the equation of the circle?

1 answer:

6 0

The center is the midpoint of these two points, so is ((-4+2)/2, (-2+6)/2) = (-1, 2). The radius is the distance from the center to either of these points. Its square is 3^2 +4^2 = 25.

The equation of the circle is
.. (x +1)^2 +(y -2)^2 = 25

You might be interested in

Work out <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D" id="TexFormula1" title="\frac{1}{5}" alt="\frac{1}{5}" align="

NNADVOKAT [17]

Answer:

Here we will explain how to calculate one half of 80.

One half of 80 is simply one half times 80, which can be written as follows:

One/half x 80

Furthermore, you can convert "one" to "1" and "half" to "2" and then the equation and answer is:

1/2 x 80 = 40.00

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

How can you use the Pythagorean theorem to solve problems

riadik2000 [5.3K]

The photo below shows -

7 0

3 years ago

PLEASE HELP ASAP WILL MARK BRAINLIEST

solong [7]

the answer is C good luck on ur test

3 0

3 years ago

Read 2 more answers

How is the circumference of a circle related to its diameter

musickatia [10]

The circumference is usually three times as much as the diameter

4 0

3 years ago

How do l do this I’m so confused

Anika [276]

Answer:

$967.6cm^{2} (1 d.p)$

Step-by-step explanation:

Total Surface Area of Cylinder = $2\pi rh+2\pi r^{2}$

Given from the question, r = 7 cm and h = 15cm

Lets Substitute r and h into the formula to find the Total Surface Area of the cylinder.

Total Surface Area of Cylinder = $2\pi (7)(15)+2\pi (7)^{2} \\=210\pi +98\pi \\=308\pi cm^{2} \\=967.6cm^{2} (1 d.p)$

7 0

2 years ago