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3 years ago

Which of these cylinders has the same volume as one with a radius of 4 ft and a height of 9 ft?

Mathematics

1 answer:

enyata [817]3 years ago

5 0

Answer:

Step-by-step explanation:

V=π4²×9=144π

for B

V=π3²×16=144π

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What is the volume of this composite solid?

vlada-n [284]

Step-by-step explanation:

5×9×12=540

6×9×12÷2=324

324+540=864

5 0

3 years ago

Read 2 more answers

In the following exercises, multiply the binomials. Use any method.<br> 255. (a + b)(2a + 3b)

Alex_Xolod [135]

Answer:

Hence the expression $(a+b)(2a+3b)=2a^2+5ab+3b^2$

Step-by-step explanation:

Explanation

The given expression is (a + b)(2a+3 b).
We have to multiply the given expression.
Multiply the (a + b) by 3b, multiply the (a + b) by 2a then add like terms.

$\begin{matrix}{} & {} & {} & {} & a & + & b \\ \times & {} & {} & {} & 2a & + & 3b \\ \end{matrix}$

___________________

$\begin{matrix}{} & {} & {} & {} & 3ab & + & 3{{b}^2} \\ {} & {} & 2{{a}^2} & + & 2ab & {} & {} \\ \end{matrix}$

___________________

$\begin{matrix}{} & {} & 2{{a}^2} & + & 5ab & + & 3{{b}^2} \\ \end{matrix}$

7 0

1 year ago

The diameter of a large lawn ornament in the shape of a sphere is 16 inches. What is the approximate volume of the ornament? Use

Dvinal [7]

Answer: $2143.6\ in.^3$

Step-by-step explanation:

Given: The diameter of a large lawn ornament in the shape of a sphere = 16 inches.

Then, the radius of ornament = $\frac{16}{2}=8$ inches.

We know that the volume of a sphere is given by :-

$\text{Volume}=\frac{4}{3}\pi r^3$ , where r is the radius of a sphere.

Now, the volume of the ornament is given by :-

$\text{Volume}=\frac{4}{3}(3.14) (8)^3\\\\\Rightarrow\text{Volume}=\frac{4}{3}\times3.14\times512=2143.57333333\approx2143.6\ in,^3$

Hence, the approximate volume of the ornament $=2143.6\ in.^3$

7 0

3 years ago

Read 2 more answers

a negative number and its opposite are separated by a distance of 14 on the number line what is the negative number

ElenaW [278]

Answer:

14 you welcome

Step-by-step explanation:

8 0

3 years ago

I need help this is urgent!!

harina [27]

If you need an equation it is -3.4x=21.5

You simply divide both sides by -3.4 to get x=-6.32

if that's not right then just get on a calculator and calculate by doing what I said to divide

7 0

3 years ago