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3 years ago

What is 125 rounded to the nearest mile

Mathematics

1 answer:

aivan3 [116]3 years ago

6 0

You can't round 125 cause 125 it's all ready rounded

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The cylinders are similar the volume of the larger cylinder is 1600 cubic centimeters what is the volume of the smaller cylinder

cestrela7 [59]

We are given Volume of the larger cylinder is = 1600 cubic centimeters.

Height of the larger cylinder = 16 cm.

We know formula of volume of a cylinder V= $\pi r^2h$ , where r is the radius of cylinder, h is the height of the cylinder.

Plugging value of V and h of larger cylinder, we get

$1600=\pi r^2(16).$

Dividing both sides by 16, we get

$\frac{1600}{16}=\frac{\pi r^2 (16)}{16}$

$r^2=100$

Taking square root on both sides, we get

r=10.

Therefore, radius of the larger cylinder is 10 cm.

We are given cylinders are similar .

<u>Note: The radii and heights of similiar cylinders are in same ratio.</u>

Therefore, we can setup a proportion:

Let us take radius of small cylinder is x.

$\frac{x}{10}=\frac{4}{16}$

$\frac{x}{10}=\frac{1}{4}$

Multiplying both sides by 10, we get

$10 \times \frac{x}{10}=10 \times\frac{1}{4}$

x=2.50.

Therefore, radius of the small cylinder = 2.5 cm.

Now, plugging radius =2.5 and height = 4 in the formula of volume the cylinder, we get

$V=\pi (2.5)^2(4)=\pi (6.25)(4) =25 \pi \ cm^3.$

Therefore, correct option is 25 pi cm^3.

8 0

3 years ago

How do I find the perimeter of a regular triangular pyramid?

makkiz [27]

Answer:Triangular Pyramid Solved Examples Example 1: Find the surface area of a triangular pyramid with the base area is 28cm.sq., the perimeter is 20cm, slant length is 5cm. Solution: Surface area = [Base area] + ½ × Perimeter × [Slant length] = 28 + ½ × 20 × 5 = 28 + 50 = 78 cm.sq.

Step-by-step explanation:

7 0

3 years ago

Which labeled line has no point of intersection with plane S? line e line f line g line AR

Kaylis [27]

Answer:

line g.

Step-by-step explanation:

We have been given a picture containing lines e, f, g and AR including plane S.

Now we have to find about which labeled line has no point of intersection with plane S.

We know that plane is a two dimensional quantity while line is a one dimensional quantity.

So there can be three cases:

case 1) line lies on the plane.

case 2) line intersects the plane.

case 3) line is parallel to the plane.

We have to choose third case as we are looking for the line

which has has no point of intersection with plane S.

From picture we see that only line g is parallel to S.

<u>Hence final answer is line g.</u>

6 0

3 years ago

Let X, Y, and Z be jointly continuous random variables. Assume that all conditional PDFS and expectations are well defined. E.g.

BabaBlast [244]

Answer:

True

Step-by-step explanation:

Given that X,Y and Z are jointly continuous random variables

For : E [g(Y) | Y= x] = ∫g(y) fY| X ( y|x ) dy

For all choices of g the function is true given that g(y) = a random variable

A random variable is a variable with an unknown value it can be said to assign values to an experimental outcome.

7 0

3 years ago

Plzzz help this is a testtttt its dueee in 10 minutes plzzzzz helppppp!!!

Leya [2.2K]

Answer:

maybe (B)

Step-by-step explanation:

6 0

3 years ago

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