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Alborosie
4 years ago
9

A King Size waterbed has the following dimensions 72 in. x 84 in. x 9.5in. It takes 240.7 gallons of water to fill it, which wou

ld weigh 2071 pounds. What is the weight of a cubic foot of water?
Mathematics
2 answers:
egoroff_w [7]4 years ago
5 0

Solution :

Given, A King Size waterbed has the following dimensions 72 in. x 84 in. x 9.5in. It takes 240.7 gallons of water to fill it, which would weigh 2071 pounds.

Volume of the King Size Waterbed, V = length X width X height

V= 72\:inch\times84\:inch\times9.5\:inch
\\\\V=57456\:cubic\: inch

We know that,

1 \:cubic\:inch=\frac{1}{1728} \:cubic\:foot\\\\
\Rightarrow57456 \:cubic\:inch=\frac{1}{1728} \times57456= 33.25\: cubic\:feet

Weight of  33.25 cubic foot water = 2071 pounds

Weight of  water in 1 cubic foot water = =\frac{2071}{33.25} =62.29\:pounds\:per\:cubic\:foot

Hence, Water weighs 62.29 pounds per cubic foot.


sineoko [7]4 years ago
4 0
One cubic foot weighs approximately 27.743 pounds
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Somebody help me out
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The number that produces an irrational number when multiplied by 0.4 is 3π. The correct option is A. 3\pi

To determine which number produces an irrational number when multiplied by 0.4

First and foremost, 0.4 is a rational number.

A rational number is a number that is of the form \frac{p}{q} where p and q are integers and q is not equal to 0.

0.4 can be written as \frac{4}{10} or \frac{2}{5}, hence, it is a rational number.

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Any irrational number when multiplied by a rational number other than zero will also be irrational.

Therefore, we are to determine which of the given options is an irrational number.

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π is an irrational number, therefore 3π is also an irrational number

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The only irrational number among the given options is 3π

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Learn more here: brainly.com/question/11763957

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