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myrzilka [38]
3 years ago
15

A buoy used to mark the swimming area at a local beach is in the shape of a sphere that has a diameter of 1.8 meters.About what

is the volume of air in the buoy?
Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
3 0

Answer:

The volume of air in buoy is 3.05 cubic meters.

Step-by-step explanation:

We are given the following in the question:

Diameter =  1.8 meters

Radius, r =

r = \dfrac{d}{2} = \dfrac{1.8}{2} = 0.9

The radius of buoy is 0.9 meters.

Volume of air in buoy:

Volume of sphere =

V = \dfrac{4}{3}\pi r^3\\\\V = \dfrac{4}{3}\times 3.14\times (0.9)^3\\\\V=3.05208\\V \approx 3.05

Thus, the volume of air in buoy is 3.05 cubic meters.

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  {Segments, Geometric mean}

  {PS and QS, RS}

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Step-by-step explanation:

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I find it easier to remember when I think of it as <em>the segment from R is equal to the geometric mean of the two segments the other end is connected to</em>.

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  segments PS and QS, gm RS

  segments PS and PQ, gm PR

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