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2 years ago

How is a rational number that is not an integer different from a rational number that is an integer?

2 answers:

6 0

A rational number that IS an integer would be written as a whole number, such as 21 or 999 or -2058. A rational number that ISN’T an integer would have decimals, such as 9.75 or 18.44444, as integers are whole numbers.

Andrei [34K]2 years ago

4 0

Every integer is a rational number, since each integer n can be written in the form n/1. For example 5 = 5/1 and thus 5 is a rational number. However, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

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m_a_m_a [10]

Answer:

hemisphere volume: 262 m³
cylinder volume: 942 m³
composite figure volume: 1204 m³

Step-by-step explanation:

A. The formula for the volume of a hemisphere is ...

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For a radius of 5 m, the volume is ...

V = (2/3)π(5 m)³ = 250π/3 m³ ≈ 261.799 m³

B. The formula for the volume of a cylinder is ...

V = πr²h

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V = π(5 m)²(12 m) = 300π m³ ≈ 942.478 m³

C. Then the total volume is ...

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V = 261.799 m³ +942.478 m³ = 1204.277 m³

Rounded to the nearest integer, the volumes are ...

hemisphere volume: 262 m³
cylinder volume: 942 m³
composite figure volume: 1204 m³

_____

As a rule, you only want to round the final answers. Here, the numbers are such that rounding the intermediate values still gives the correct final answer. That is not always the case.

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