<span>One cm represented 11 in. in the first scale, but now 1 cm represents 12 in. in the second scale.</span>
I think you meant "wide." :) Since it is a pipe, you should know that it is the shape of a cylinder. Therefore, the formula would be: πr^2h. Substitute the height for h. (π(4.5)^2(13). Since it's 9 cm wide total, divide it by 2 to get the radius (part of formula), which is 4.5 So multiply π times 4.5^2 (which equals 20.25) times 13. This all will equal 826.605. You can simplify this decimal to 827. Therefore, the volume is 827 cm^3.
Answer:
Using properties of parallelogram and angle sum property of a triangle in the figure as shown below in the attachment
In parallelogram ABCD, AC is a diagonal.
Given:
and
As, we know that opposite angles in parallelogram are equal.
therefore,

Now, in ΔADC
Sum of the measures of angles in a triangle is 180 degree.

Substituting the values of
and
we have;
or

Subtract
from both sides we get

Therefore, the measure of angle CAD is
.
Answer:

Step-by-step explanation:
The opposite operation of squaring is taking the square root.

We know that the denominator of a fractional power is the index of the corresponding root:
![\displaystyle x^\frac{1}{n}=\sqrt[n]{x}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20x%5E%5Cfrac%7B1%7D%7Bn%7D%3D%5Csqrt%5Bn%5D%7Bx%7D)
For n=2, we don't usually write the index in the root symbol:

In the case of this problem, ...

Answer:
60=2(20)+2x
x=10
Step-by-step explanation:
First, let's write some equations. I wrote 60=2(20)+2x, where x is the length of the room. To solve, first multiply 2 times 20 for 40 (60=40+2x). Then, I subtracted 40 from both sides (20=2x). Finally, I divided on both sides by 2 (10=x).