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Arada [10]
3 years ago
14

The circle shown has a radius of 4 cm.

Mathematics
1 answer:
puteri [66]3 years ago
5 0

Answer:

8 cm

Step-by-step explanation: diamater is half the radius

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Select the correct answer from each drop-down menu.
serious [3.7K]

Answer:

Center: (4,8)

Radius: 2.5

Equation: (x-4)^2+(y-8)^2=6.25

Step-by-step explanation:

It was given that; the endpoints of the longest chord on a circle are (4, 5.5) and (4, 10.5).

Note that the longest chord is the diameter;

The midpoint of the ends of the diameter gives us the center;

Use the midpoint formula;

(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )

The center is at; (\frac{4+4)}{2} ,\frac{5.5+10.5}{2}=(4,8)

To find the radius, use the distance formula to find the distance from the center to one of the endpoints.

The distance formula is;

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

r=\sqrt{(4-4)^2+(10.5-8)^2}

r=\sqrt{0^2+(2.5)^2}

r=\sqrt{0^2+(2.5)^2}=2.5

The equation of the circle in standard form is given by;

(x-h)^2+(y-k)^2=r^2

We substitute the center and the radius into the formula to get;

(x-4)^2+(y-8)^2=2.5^2

(x-4)^2+(y-8)^2=6.25

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3 years ago
Your favorite basketpall player made two-point duele goals and three-point field goals for a total of 34 points. He made 16 shot
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Answer:

it was just a joke chilll

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3 years ago
Decide of the three numbers can be the measures of the sides of a triangle.
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I believe the correct answer is B
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Identify the independent and dependent variables of these data sets: 1) Number of girls who play hockey each year,
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independent: year, height, laps

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3 years ago
Which set is an example of like fractions? A. 2⁄1 and 2⁄3 B. 1⁄2 and 3⁄2 C. 7⁄4 and 4⁄7 D. 10⁄10 and 5⁄5
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<span>Fractions which have the same denominator are called like fractions.
</span>The answer is B. 1⁄2 and 3⁄2
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3 years ago
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