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3 years ago

13

a cylinder shaped barrel has a diameter of 3 feet and a height of 4.5 feet if the barrel is empty approximately how much water i

s needed to fill the barrel and I need work to be shown please and thank you

1 answer:

pav-90 [236]3 years ago

6 0

Volume of Cylindar:
$v = \pi {r}^{2} h$
the radius is half of the diameter

$v = \pi {1.5}^{2} 4.5$
v = 31.8

Option A.) 32 cu. ft.

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Shtirlitz [24]

Answer:

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Step-by-step explanation:

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3 years ago

You have a pool that measures 8 yards by 10 yards. You want to build a deck around all four sides of the pool and you want to in

gladu [14]

Given:
pool length : 10 yards
pool width : 8 yards

Area = 10 yds * 8 yds = 80 yd²

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3 years ago

Part 3: The Space Inside! Find the volume of the shipping box using the two methods and show your work: Packing cubes Using the

kirill115 [55]

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Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

4. Solve the inequality.<br>

olga2289 [7]

Answer:

D

Step-by-step explanation:

Given

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7 0

3 years ago

A rubber ball is dropped from the top of a hole. Exactly 20 seconds later, the sound of the rubber ball hitting bottom is heard.

gayaneshka [121]

9514 1404 393

Answer:

4192.9 ft

Step-by-step explanation:

We assume your falling-distance formula is supposed to be ...

s = 16t²

So, the time required to fall distance s is ...

t = √(s/16) = (1/4)√s

The time required for sound to travel distance s is ...

s = 1100t

t = s/1100

Then the sum of the time for the ball to fall and the time for the sound to travel back is ...

(1/4)√s + s/1100 = 20

275√s = 22000 -s . . . . . multiply by 1100 and subtract s

75625s = s^2 -44000s +484,000,000 . . . square both sides

s^2 -119,625s +484,000,000 = 0 . . . . put in standard form

s ≈ (1/2)(119,625 ±√12,374,140,625) = {4192.943, 115432.057}

Only the smaller of these two solutions makes any sense in this problem.

The hole is about 4192.9 feet deep.

_____

<em>Additional comment</em>

The distance equation for the falling object presumes a vacuum. The sound transmission presumes the presence of air, so the question setup is self-contradictory.

7 0

3 years ago