The diameter of a circle Is 8 inches . What is the area ?

Mathematics

2 answers:

Elena L [17]2 years ago

8 0

Answer:

radius=d/2 = 8/2 = 4inch.

Step-by-step explanation:

area = πr²

16π(inch)². or 352/7 (inch)².

hope this helps you.

luda_lava [24]2 years ago

4 0

Hello There!

$GraceRosalia$ is here to help you!

We are given that

d=8 in.

We know that the radius is 1/2 of d or r=d/2. So the radius is 4.

However, we have to find the area.

The formula for the area of a circle is:

A= $\pi$ $r^{2}$

We know that r=4, so all we have to do is plug it into the formula:

A= $\pi (4)^{2}$

Remember that only the radius is squared.

A= $\pi *16$

A=50.265

Let's round to the nearest tenth:

A=50.3

Hope this helps you!

$GraceRosalia$

Let me know if you have any questions!

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What is the equation for the measure of Angle P?

CaHeK987 [17]

There is a theorem for inscribed quadrilaterals in a circle. This theorem states that: "<span>Opposite angles in any quadrilateral inscribed in a circle are supplements of each other".
In other words, the sum of each two opposite angles in a quadrilateral inscribed in a circle is 180.

Based on the above:
measure angle O + measure angle Q = 180
measure angle R + measure angle P = 189

Therefore:
measure angle P = 180 - measure angle R</span>

8 0

3 years ago

Please help CANT MISS ANYMORE!

dsp73

Given points,

(x1,y1)=(2,9)

(x2,y2)=(10,6)

now the distance between two points is,

$d = \sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2} } \\ = \sqrt{ {(10 - 2)}^{2} + {(6 - 9)}^{2} } \\ = \sqrt{ {8}^{2} + {( - 3)}^{2}} \\ = \sqrt{64 + 9} \\ = \sqrt{73 \:} \: units$