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kherson [118]
3 years ago
9

What is the radius of the following circle?

Mathematics
2 answers:
Y_Kistochka [10]3 years ago
8 0

Answer:

The radius is: 1

Step-by-step explanation:

The equation of a circle in center-radius form is:

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

Where the center is at the point (h, k) and the radius is "r".

Given the equation of the circle:

x^2+y^2=1

You can identify that:

r^2=1

Then, solving for "r", you get that the radius of the circle is:

r=\sqrt{1}\\\\r=1

erma4kov [3.2K]3 years ago
3 0

Answer:

Radius = 1

Step-by-step explanation:

It is given that equation of a circle is x² + y² = 1

<u>Points to remember</u>

Equation of a circle with center(h, k) and radius r is given by,

(x - h)²  + (y - k)² = r²

<u>To find the radius of circle</u>

Compare the two equations

x² + y² = 1  and (x - h)²  + (y - k)² = r²

we get the center is (0, 0)

therefore we can write

r² = 1

r = 1

Therefore radius r = 1

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Answer:

They use 741 dollars

Step-by-step explanation:

Write 65% as

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Since, finding the fraction of a number is same as multiplying the fraction with the number, we have

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Therefore, the answer is 741

If you are using a calculator, simply enter 65÷100×1140 which will give you 741 as the answer.

4 0
3 years ago
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The surface area of the figure is 96 + 64π ⇒ 1st answer
Step-by-step explanation:
* Lats revise how to find the surface area of the cylinder
- The surface area = lateral area + 2 × area of one base
- The lateral area = perimeter of the base × its height
* Lets solve the problem
- The figure is have cylinder
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∴ Its radius = 8 ÷ 2 = 4 cm
- Its height = 12 cm
∵ The perimeter of the semi-circle = πr
∴ The perimeter of the base = 4π cm
∵ The area of semi-circle = 1/2 πr²
∴ The area of the base = 1/2 × π × 4² = 8π cm²
* Now lets find the surface area of the half-cylinder
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6 0
3 years ago
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\dfrac{\sqrt2}2=C_1\cos\left(\dfrac\pi4\right)+C_2\sin\left(\dfrac\pi4\right)

\implies\dfrac1{\sqrt2} = \dfrac{C_1}{\sqrt2}+\dfrac{C_2}{\sqrt2}

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Similarly, given that <em>x'</em> (<em>p</em>/4) = 0, you have

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7 0
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Answer:

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Step-by-step explanation:

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3 0
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