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3 years ago

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If r = 8 units and h = 11 units, what is the volume of the cylinder shown above? Use 3.14 for . A. 2,210.56 cubic units B. 753.6

cubic units C. 552.64 cubic units D. 3,039.52 cubic units

1 answer:

Anna71 [15]3 years ago

8 0

Answer:

A) 2210.56 cubic units

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jarptica [38.1K]

Answer:

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Step-by-step explanation:

Let

x ----> the amount of pure acid (100% solution) in gallons

Remember that

$100\%=100/100=1$

$20\%=20/100=0.20$

$60\%=60/100=0.60$

we know that

$(1)(x)+(0.20)(3)=(0.60)(x+3)$

solve for x

$x+0.60=0.60x+1.80$

$x-0.60x=1.80-0.60\\0.40x=1.20\\x=3\ gal$

therefore

3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in order to get a 60% acid solution

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