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3 years ago

Find the volume of this cylinder

Mathematics

2 answers:

Neporo4naja [7]3 years ago

8 0

Answer:

Volume of the cylinder :---

$Volume = \pi \times{(radius)}^{2} \times height \\ = \frac{22}{7} \times 5 \times 5 \times 10 \\ = \boxed{785.4 \: c {m}^{3}}$

<h3><u>B. 785 cm^3</u> is the right answer.</h3>

alisha [4.7K]3 years ago

8 0

The answer is 785 cm^3

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2. The beam of a lighthouse can be seen for up to 20 miles. You are on a ship that is 10 miles east and 16 miles north of the li

Oksanka [162]

Answer:

<em>The person on the ship can see the lighthouse </em>

Step-by-step explanation:

<u>The Circle Function </u>

A circle centered in the point (h,k) with a radius r can be written as the equation

$(x-h)^2+(y-k)^2=r^2$

Any point (x,y) can be known if it's inside of the circle if

$(x-h)^2+(y-k)^2\leq r^2$

The question is about a beam of a lighthouse than can be seen for up to 20 miles. If we assume the lighthouse is emitting the beam as the shape of a circle centered in (0,0), then its radius is 20 miles. Thus any person riding a ship inside the circle can see the lighthouse. This means that

$x^2+y^2\leq 20^2$

$x^2+y^2\leq 400$

The ship's coordinates respect to the lighthouse are (10,16). We should test the point to verify if the above inequality stands

$10^2+16^2\leq 400$

$356 \leq 400$

The inequality is true, so the person on the ship can see the lighthouse

5 0

3 years ago

Miguel took 7 hours to read a 259-page book and Julissa took 5 hours to read a 175-page book. Who read more pages per hour?

Pie

M: 259/7=37 pages per hour
J: 175/5= 35 pages per hour

Answer: Miguel

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2 years ago

The base parking charge at a mall on a Sunday is $2 per hour. Given that a vehicle is parked for 4 hours, only $6 is charged. Wh

igor_vitrenko [27]

The percentage that is saved upon parking for 4 hours is 25%.

Parking for 4 hours should warrant $8, but the new deal deducts $2 from the original rate. $2 ÷ $8 = 0.25 or 25%.

Thank your for posting your question. Please feel free to ask me more.

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2 years ago

Use any method to add or subtract 5/7 {3/14+3/14}

OlgaM077 [116]

Answer:

15/49

Step-by-step explanation:

5/7 (3/14 + 3/14)

first combine like terms

3/14 + 3/14 = 6/14

then simplify by 2

6/14 to 3/7

now that both the term inside and outside have the same denominator, multiply

5/7 x 3/7 = 15/49

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2 years ago

1 pts

anyanavicka [17]

Answer:

she will go broke in 5 years kid

Step-by-step explanation:

this is the right answer sir

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3 years ago