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Goshia [24]
3 years ago
5

What is the volume of a hemisphere with a radius of 6.5 feet rounded to the nearest 10th of a cubic foot

Mathematics
2 answers:
nikitadnepr [17]3 years ago
5 0

Answer:574.9ft^3

Step-by-step explanation:

radius(r)=6.5feet

π=3.14

volume of hemisphere=2/3 x π x r^3

Volume=2/3 x 3.14 x (6.5)^3

Volume=2/3 x 3.14 x 6.5 x 6.5 x 6.5

Volume=(2x3.14x6.5x6.5x6.5) ➗ 3

Volume=1724.645 ➗ 3

Volume=574.9ft^3

Yuki888 [10]3 years ago
3 0

Answer:

=574.9 ft^3

Step-by-step explanation:

The volume of a sphere is V = 4/3 pi r^3

Take half of that to get a hemisphere

1/2 *V = 1/2 *4/3 pi r^3

         =2/3 pi r^3

So the volume of a hemisphere is

V = 2/3 pi r^3

   = 2/3 pi (6.5) ^3

    = 2/3 ( 3.14) * (6.5)^3

    =574.8816667

Rounded to the nearest tenth

   =574.9 ft^3

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*note negative times a negative equals positive and negative times positive is negative 
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Ne4ueva [31]
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Answer:

I'll setup the problem and you can compute the answer

Step-by-step explanation:

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6 0
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Find the perimeter of the figure shown above. a. 40 cm c. 52 cm b. 60 cm d. 75 cm Please select the best answer from the choices
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4 years ago
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One of the roots of the quadratic equation 4mnx^2 – 6m^2x – 6n^2x + 9mn = 0 (m, n ≠ 0) is a)-3m/2n b)3m/2n c)2m/3n d)-2m/3n
maxonik [38]

Answer:

B.\ \frac{3m}{2n}

Step-by-step explanation:

Given

4mnx^2 - 6m^2x - 6n^2x + 9mn = 0\ (m, n \neq  0)

Required

Calculate one of the root of the equation

4mnx^2 - 6m^2x - 6n^2x + 9mn = 0

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Split equation

2mx - 3n = 0\ or\ 2nx - 3m = 0

Make x the subject of formula in both expressions

2mx = 3n\ or\ 2nx = 3m

x = \frac{3n}{2m}\ or\ x = \frac{3m}{2n}

<em>From the list of given options, one of the roots of the equation is</em> \frac{3m}{2n}

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