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3 years ago

HELP QUICKLY!!!! WILL MARK BRAINLIEST!!!

2 answers:

4 0

The volume of a cone is equal to (pi*r^2*h)/3

(pi*25*2)/3= 52.35987...

Density = mass/volume

d= 6 grams/ 52.35987 cm^3= 0.11459...

Final answer: D

stepan [7]3 years ago

4 0

Answer:

$0.11g/cm^3$

Step-by-step explanation:

We are given that

Mass of cone=6g

Radius of cone=5 cm

Height of cone=2 cm

We have to find the density of cone.

Formula:Volume of cone= $\frac{1}{3}\pi r^2 h$

Volume of cone= $\frac{1}{3}\times 3.14\times 25\times 2=52.33 cm^3$

We know that

Density = $\frac{mass}{volume}$

Density of cone= $\frac{6}{52.33}=0.11g/cm^3$

Answer: $0.11g/cm^3$

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We need to show that the √2 is an irrational number.

And from the given steps of proof stated in the question, we need to find the assumption that justifies the fact : " Both of the number a and b cannot be even".

First take the given options :

Option a : √2 is a rational number

√2 being an rational or irrational has no relation of a and b to be even or odd. So, this option is rejected.

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This shows that a and b are not even because if a and b are even then a/b can be simplified in other lowest term.

Option c : √2 is a irrational number

Similarly, By using the inverse part of Option A, option c is also rejected.

Option d : The fact that b divides a evenly

This only shows that the a is even. This does not give any idea about b is even or not. So option D is also rejected.

Option E : The fact that a and b are whole numbers

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Step-by-step explanation: Please refer to the attached diagram for details.

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