All categories

2 years ago

What is the volume of a cylinder with base radius 2 and height 9?

Mathematics

2 answers:

aleksley [76]2 years ago

7 0

Answer:

Step-by-step explanation:

volume= r × h = 2 × 9= 18

mylen [45]2 years ago

5 0

Answer:

The volume is 144 $\pi$ .

Step-by-step explanation:

In order to calculate the volume of a cylinder, you have to find the area of it's base. Because a cylinder's base is a circle, you use the formula A= $\pi r{2}$ . Substituting in the radius's length would be A= $\pi (4){2}$ , which is A=16 $\pi$ . Now that we know the base area of the cylinder, we multiply it by the height, which is 9 to calculate the volume. Therefore, the volume of the cylinder would be 9×16 $\pi$ , which is 144 $\pi$ .

You might be interested in

If z=4.0 and y= 7.2 what is the value of x?

Annette [7]

<span>Nothing further can be done with this it needs to be explained better</span>

4 0

3 years ago

Find the area of the shape shown below. I NEED HELP NOWWWWWW

Varvara68 [4.7K]

Answer:

<h2> 12.5 units ${}^{2}$ </h2>

Step-by-step explanation:

Given figure : Trapezoid

Base sides,

a = 2.5

b = 7.5

Height ( h ) = 2.5

Now, finding the area:

$\frac{1}{2} (a + b) \times h$

Plug the values

$= \frac{1}{2 } \times (2.5 + 7.5) \times 2.5$

Calculate the sum

$= \frac{1}{2} \times 10 \times 2.5$

Reduce the numbers with G.C.F 2

$= 5 \times 2.5$

Calculate the product

$12.5 \: \: {units}^{2}$

Hope this helps...

Best regards!

8 0

2 years ago

Jordan enters 3.4 x6.8 into his calculator. He writes the digits 2312 from the display and forgets the decimal point. Where shou

vivado [14]

Answer:

23.12

Step-by-step explanation:

Jordan has entered 3.4 x 6.8 on his calculator.

3.4 x 6.8 = (34/10) x (68/10) = (34 x 68) / (100) = 23.12

Or an easier way would be, observing the two numbers.

In 3.4 , there is one digit after decimal point.

In 6.8 there is one digit after decimal point.

So in their product there should be two digits after the decimal point.

So the answer is <em>23.12</em>

8 0

2 years ago

Solve the inequality x + 3 < 7. Which number line represents the solution?<br> es )

Leya [2.2K]

Answer:

x < 4

So the dot on the graph would be an open dot and the number line would be shaded to the left.

Step-by-step explanation:

I do not see a number line, but

x < 4

So the dot on the graph would be an open dot and the number line would be shaded to the left.

6 0

2 years ago

Before you can make a pie chart you need to figure out how much of the circle belongs to each category. Suppose that you earned

svetoff [14.1K]

Answer:

missions-24

recreation-108

savings-144

school supplies-48

tithe-36

Step-by-step explanation:

so first convert all the given costs to cents by multiplying each amount with 100 then add all of them to get the total as 600

in a pie chart we know that it's a circle and all angles within the circle must add up to 360 so to get an angle for a certain cost that will represent it in the chart you have to take that cost over the total to get the fraction of the circle it will occupy multiplied by 360 to get it in degrees or which portion of 360 will it occupy hence

60/600×360=36

4 0

3 years ago