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swat32
3 years ago
5

The diameter of a circle is 4 feet what is the area?

Mathematics
1 answer:
masya89 [10]3 years ago
3 0

the area of the circle is 12.57

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What is the volume of a hemisphere with a diameter of 51.8 inches rounded to the nearest 10th of a cubic inch?
lorasvet [3.4K]

Answer:

volume of a hemisphere ≈ 36369.5 in³

Step-by-step explanation:

To find the formula for calculating the volume of a hemisphere, we will follow the steps below:

write the formula for calculating the volume of a hemisphere.

volume of a hemisphere = volume of a sphere ÷2

                                        = \frac{4}{3}πr³   ÷   2

                                        =\frac{2}{3} πr³

where r is the radius

from the question given, diameter = 51.8 inches

but diameter = 2r , this implies that r = \frac{d}{2}    hence   r = \frac{51.8}{2} = 25.9 inches

π is a constant and is ≈ 3.14

we can now proceed to insert the values into the formula

volume of a hemisphere    =\frac{2}{3} πr³

                                                =\frac{2}{3} × 3.14 ×25.9³

                                                =\frac{2}{3} × 3.14×17373.979

                                                 ≈36369.5 in³ to the nearest tenth cubic inch.

volume of a hemisphere ≈ 36369.5 in³

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4 years ago
Plz help ——————————————————————
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Answer:

6.5

Step-by-step explanation

I think

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Answer:

Step-by-step explanation:

2x^2-5x+1=0\\x=\frac{5+-\sqrt{25-8} }{2*2} \\x=\frac{5+-\sqrt{17} }{4}

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4 years ago
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