3 years ago

Find the volume of the composite solid. Round your answer to the nearest tenth.

1 answer:

6 0

The "cylinder" has a diameter of 6, and therefore its radius is half that, or 3, thus

$\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h~~
\begin{cases}
r=radius\\
h=height\\
-----\\
r=3\\
h=11
\end{cases}\implies V=\pi (3)^2(11)\implies V=99\pi$

You might be interested in

Find the balance in an account at the end of 8 years if $6000 is invested at an interest rate of 4.2% that is compounded continu

BARSIC [14]

B , the second option, is your answer

7 0

3 years ago

A window in the shape of a rectangle as shown below has a width of x+5 and a length of x^2- 3x+7 express the area of the rectang

Ksju [112]

Answer:

$x^3+x^2-5x+28$

Step-by-step explanation:

since a=lw, the area is (x^2-3x+7)(x+4)

1. distribute parentheses $\left(x^2-3x+7\right)\left(x+4\right)=x^2x+x^2\cdot \:4+\left(-3x\right)x+\left(-3x\right)\cdot \:4+7x+7\cdot \:4$

2. apply +(-a)=-a rule $x^2x+4x^2-3xx-3\cdot \:4x+7x+7\cdot \:4$

3. Simplify

Steps to simplify:

$x^2x=x^3$

$3xx=3x^2$

$3\cdot \:4x=12x$

$7\cdot \:4=28$

$x^3+4x^2-3x^2-12x+7x+28$

4. Add like terms $=x^3+4x^2-3x^2-5x+28$

5. Add like terms $=x^3+x^2-5x+28$

6 0

3 years ago

How do I solve for y=160x+2=y=280x-3?

mrs_skeptik [129]

Answer (5/264,76/33)

5 0

3 years ago

What is the answer to 78.2÷7<br>

Lesechka [4]

Answer:

11.1714

Step-by-step explanation:

Just use a calculator! :)

3 0

3 years ago

Read 2 more answers

Use the diagram to solve. What is 260% of 6

Serga [27]

Answer:

15.6

Step-by-step explanation:

because 6×2.60

6 0

3 years ago

Read 2 more answers