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Phoenix [80]
3 years ago
14

What is the volume of a cone with a radius of 5 inches and a height of 8 inches?

Mathematics
1 answer:
Sindrei [870]3 years ago
5 0

V=209.44 | Formula for the volume of a cone: V=\pi r^2\frac{h}{3}

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What is cos 45 degrees in simplified radical form?​
Ostrovityanka [42]

<u>Answer:</u>

The value of cos 45 degrees in simplified radical form is 0.70710 approximately.

<u>Solution:</u>

Given, Cos of angle 45 degrees.

We have to find the value of the Cos of 45 degrees in radical form.

From trigonometric ratios,  

Cos of angle 45 degrees = cos ⁡45 = \frac{1}{\sqrt{2}}

Multiplying numerator and denominator with square root of 2

\begin{array}{l}{=\frac{1}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}}} \\\\ {=\frac{1 \times \sqrt{2}}{\sqrt{2} \times \sqrt{2}}} \\\\ {=\frac{\sqrt{2}}{(\sqrt{2})^{2}}} \\\\ {=\frac{\sqrt{2}}{2}}\end{array}

The value of square root of 2 is 1.414213

=\frac{1.414213}{2}=0.70710

Hence, the value of Cos of angle 45 degrees is 0.70710 approximately

6 0
3 years ago
There are 6 circles and 9 squares. What is the simplest ratio of circles to squares?
AlexFokin [52]
2:3 is the answer. You simplify 6:9.
7 0
3 years ago
Read 2 more answers
A=5<br> b=12<br> c=10<br> d=2<br><br> 2a to the power of 2-c
levacccp [35]

2a is 2 x a

Substitute a =5

2 x 5 =10

Now we have:

10^2-c

Substitute c = 10

(2 - 10 = - 8)

So,it's now 10^ - 8 (10 to the power of - 8)

Ans: 10^ - 8 (or 1 x 10^ -8)

Hope this helps!

5 0
1 year ago
What is the value of the expression |-7| + |-4|
weqwewe [10]
Hey there,

Your question states: <span>What is the value of the expression |-7| + |-4|

Sense they both are absolute values, they are pretended to be as normal numbers. By simplifying this, your correct answer would be 11.

Hope this helps.
~Jurgen</span>
7 0
3 years ago
Geometry &gt; 0.6 Area of sectors XZQ
Ratling [72]

Answer:

4π mi²

Step-by-step explanation:

s = (∅/360) * πr²

s = (135/360) * π(4²)

s = (135/360)(16) * π

s = 4π mi²

3 0
3 years ago
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