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Can someone find the area of the whole thing?

 Apr 6, 2020
 #1
avatar+1948 
+2

This is how to do it:

 

Find the volume of the cylinders: pi*radius^2*height

Find the volume of the rectangular prism: (Subtract the diameters of the cylinders first) Length*width*height

 

Then, add those together.

 Apr 6, 2020
edited by CalTheGreat  Apr 6, 2020
edited by CalTheGreat  Apr 6, 2020
 #4
avatar+109486 
+2

Cal you have messed that up. Can you see why?

Melody  Apr 6, 2020
 #5
avatar+1948 
+1

I think I forgot the "adding it up" part.

CalTheGreat  Apr 6, 2020
 #2
avatar+109486 
+2

What area?  It is a 3-dimensional object.  

It has a volume. The sides have area.  What area do you want?

 Apr 6, 2020
 #3
avatar+1948 
+1

*volume, I mean.

 

Thanks for pointing me out!

CalTheGreat  Apr 6, 2020
 #6
avatar+109486 
+2

Ok, it is a volume but it still is not quite right.   

Can you see why it is not the correct volume?

 

Draw the front bit on some paper, that might help.

Melody  Apr 6, 2020
 #7
avatar+1948 
+3

Oops... it is not a rectangular prism. My bad! I will try again.

 Apr 6, 2020
 #8
avatar+1948 
+3

Find 3/4 of the volume of the cylinders (How to find the volume of it is shown in my answer above), then find the volume of the rectangular prism!

 Apr 6, 2020
 #9
avatar+109486 
+1

Excellent!

Melody  Apr 6, 2020

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