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kow [346]
2 years ago
8

Question is in the image

Mathematics
1 answer:
pshichka [43]2 years ago
8 0

Answer:

(x +3)^2 + (y -3)^2 = 3^2

Step-by-step explanation:

Your first task is to find the center.

The longest possible line of the circle goes from (-3,0) to (-3,6)

So the center is at the midpoint of these two points.

The midpoint is at (-3 - 3)/2 , (6+ 0)/2 or (-3,3)

That gives you the center of the circle.

So far what you have is

(x +3)^2 + (y -3)^2 = r^2

Now the distance of the center to the bottom point is (-3,3) to (-3,0)

r^2 = (x2 - x1)^2 + (y2 - y1)^2

x2 = - 3

x1 = - 3

y2 = 3

y1 = 0

r^2 = (-3 - -3)^2 + (3 - 0)^2

r^2 = 3^2

The entire answer is

(x +3)^2 + (y -3)^2 = 3^2

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Answer:

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Step-by-step explanation:

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     i.e    Surface area = \pir^{2} + \piLr

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Applying the Pythagoras theorem,

                        L = \sqrt{h^{2} + r^{2}  }

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The given cylindrical hole has a radius of 4 cm and depth 2 cm.

The area of one of its circular surfaces = \pir^{2}

                                                   = \pi × (4)^{2}

                                                   = 16\pi cm^{2}

The surface area of the piece of wood to be painted = surface area of cone - area of cylindrical circular surface.

Surface area of the wood to be painted = \pir (r + \sqrt{h^{2} + r^{2}  } ) - 16\pi

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3 years ago
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Step-by-step explanation:

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7 0
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ch4aika [34]

Answer:

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Step-by-step explanation:

if y is the other missing side

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ivann1987 [24]
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Answer:

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Step-by-step explanation:

we know that

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