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siniylev [52]
3 years ago
15

SOMEONE PLEASE ACTUALLY HELP MEEE!!!!! Write an example of the Identity Property of Addition using the number 43.

Mathematics
1 answer:
masya89 [10]3 years ago
8 0

Answer:

40 + 3

Step-by-step explanation:

=43. you dont need to use it for 0, even though that's adding too. and multiplying isnt addition.

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What is the volume of a hemisphere with a radius of 26.7 m, rounded to the nearest tenth of a cubic meter?
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Answer:

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Step-by-step explanation:

a hemisphere is half a sphere.

And if the formula for the volume of a sphere is:

V=\frac{4\pi r^3}{3}

we must calculate the volume of the sphere and in the end divide by two to find the volume of the hemisphere.

Since the radius is:

r=26.7m

substituting this into the formula for volume:

V=\frac{4\pi (26.7m)^3}{3} \\\\V=\frac{4(3.1416)(19,034.163m^3)}{3} \\\\V=79,730.12m^3

this is the volume of the total sphere, thus the volume of a hemisphere is:

\frac{V}{2}=\frac{79,730.12m^3}{2}\\  =39,865.06m^3

rounding to the nearest tenth:

39,865.1m^3

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