9. Which of the following could be the areas

Mathematics

2 answers:

Paha777 [63]3 years ago

7 0

Answer:

letter A po angsagot terror

kati45 [8]3 years ago

3 0

<h2>Hmm you might think I'm c.r.a.z.y but my answer is </h2><h2><u>A. 12 f12, 16 f12 and 20 f12</u></h2>

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A circle has radius 50 cm. Which of these is closest to its area?

Angelina_Jolie [31]

Answer:

7854 square centimeters

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

A = pi ( 50)^2

A = 2500 pi

Let pi be approximated by 3.14

A = 2500 * 3.14

A =7850 cm^2

8 0

3 years ago

Read 2 more answers

A circle is centered at the point (5,-4) & passes through the point (-3,2).

maxonik [38]

Equation of the circle:

$(x-5)^2+(y+4)^2=100$

Step-by-step explanation:

The equation of a circle is given by

$(x-x_0)^2+(y-y_0)^2=r^2$

where

$(x_0,y_0)$ are the coordinates of the center of the circle

r is the radius of the circle

For the circle in this problem, we know that:

(5,4) are the coordinates of the center

We also know that the circle passes through the point (-3,2), therefore we can calculate the radius as the distance between the point on the circle and the center of the circle:

$r=\sqrt{(-3-(5))^2+(2-(-4))^2}=\sqrt{(-8)^2+(6)^2}=\sqrt{64+36}=10$