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avatar+326 

 

Hello this question has already been answered but it is wrong, can anyone please help

 Apr 18, 2022
 #1
avatar+125 
-2

Ima go get chris hang tight

 Apr 18, 2022
 #2
avatar+117104 
+1

please give us the link to the original post.

It should be answered on the original.

You do not nedd to repeat the question,  Just give the link and ask for more help.

 Apr 18, 2022
 #3
avatar+122385 
+2

Here's my best attempt

 

Since A  joins C   (without overlap)   the circumference of the  cylinder  =  6

 

So   the radius  can  be figured     as   

 

6  =  2pi * r

 

r  = 3  / pi

 

And since we know the volume of the  cylinder  we  can  figure the height as

 

(27/2) =  pi  (3/ pi)^2  * h

 

(27/2)  =  9 / pi  * h

 

h =  ( 27pi)  / (2 * 9)  =    27pi /18  =   3 pi /2

 

So.....this also   =  the  rhombus height

 

And the sin BAD  =   rhombus height  / rhombus side   =   (3 pi/2) / 6  =   pi  / 4

 

Corrected   !!!!

 

 

cool cool cool

 Apr 18, 2022
edited by CPhill  Apr 18, 2022
 #6
avatar+326 
+1

Thank you for the answer CPhill, it still seems to be wrong...

 

I put my work below, to show what I got before

 

Im still confused on what is wrong ...

Vinculum  Apr 18, 2022
 #7
avatar+122385 
+1

Oops...I put in the incorrect volume....see my corrected answer  !!!!

 

 

cool cool cool

CPhill  Apr 18, 2022
 #9
avatar+326 
+2

Yep that's what I got too

 

Thank you. CPhill!!!

 

 

smileysmileysmiley

Vinculum  Apr 18, 2022
 #4
avatar+326 
+1

Original post: https://web2.0calc.com/questions/consider-rhombus-abcd-with-side-length-6

 

 

My work: 

 

I got that the circumference would be 6, so the area of the base would be 9. Then, I got that the height is 3/2 because 9*3/2 = 27/2. But, when I typed in 1/4 for the answer which is (3/2)/6 it was wrong.

 Apr 18, 2022
 #5
avatar+125 
-1

So chris right

Kakashi  Apr 18, 2022
 #8
avatar+326 
+2

I got it!!!!!!

 

I forgot to type in the pi...

 

Its pi/4!!!!

 

smileysmileysmiley

 Apr 18, 2022
 #10
avatar+122385 
+1

LOL!!!

 

Never forget   the  "pie"   !!!!!

 

 

cool cool cool

CPhill  Apr 18, 2022

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