3 years ago

(85 x 255) / 289 + 15 - 70 =

Mathematics

2 answers:

Alex777 [14]3 years ago

7 0

The answer to your question is 20

ANEK [815]3 years ago

5 0

I do believe its twenty

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What is the mean of the following set of numbers 64 65 63 66 60 65 66 68 69 66 63

BaLLatris [955]

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edit : dont listen to me I didnt see the numbers 64 and 65, im sorry

7 0

4 years ago

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A sphere and a cylinder have the same radius and height. The volume of the cylinder is 21 meters cubed. A sphere with height h a

8090 [49]

Answer:

C. 14 metres cubed

Step-by-step explanation:

The volume of a sphere is denoted by: $V=\frac{4}{3} \pi r^3$ , where r is the radius, while the volume of a cylinder is denoted by: $V=\pi r^2h$ , where r is the radius and h is the height.

Here, we know that the sphere and cylinder have the same radius and height. However, the "height" of the sphere is technically just the diameter, which is twice the radius. So, h = 2r. We know the volume of the cylinder is 21, so:

$V=\pi r^2h=\pi r^2*2r=2\pi r^3$