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3 years ago

(03.05 LC)

Mathematics

2 answers:

vlabodo [156]3 years ago

8 0

3.14 * 3 * 6 = 56.52 cubic inches. Hope this helps. :)

Rama09 [41]3 years ago

8 0

V = 1/3 * a_base * height, a_base = pi * r^2

V = 1/3* pi * 3^2*6 = 56.54 cubic inch,

so ... Third one!!

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Answer:

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Step-by-step explanation:

Given: A candle is 7 inch tall after burning for 1 hour.

Same candle is 5.5 inch tall after burning for 4 hours.

Lets assume time to burn candle be "x" and height of candle be "y".

Now, finding the rate of changes in height of candle per hour.

Let "m" represent the changes in height of candle per hour.

we know, $m= \frac{Changes\ in\ length}{Changes\ in\ time}$

∴ m= $\frac{5.5-7}{4-1} = \frac{-1.5}{3}$

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Next, forming an equation to know the original height of candle.

using equation; $y= mx+ original\ height$

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⇒ $7= -0.5+ original\ height$

Adding both side by 0.5

⇒ $Original\ height= 7.5\ inches$

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Again using the same equation to find the height of candle after burning for 6 hour.

$y= -0.5\times 6+ 7.5$

⇒ $y= -3+7.5$

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