Can someone quickly help me with my math homework on surface area/volume?
I've searched a lot on the internet but I can't find any video or anything that will help me. I haven't been here all day today and I have to finish this homework by tomorrow. I've already finished a) and I don't know if it's right but somehow b) and c) are very difficult for me.
Can anyone help me? Thanks in advance.
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Share image 2 in 2 blocks. Then you have volume that you add.
Surface similar, only that you need to subtract the contact area 2 times.
Figure 3
The space is a quad whose volume you subtract from the large quad.
The surface is similar to that previously, only that is added and the longitudinal surface is subtracted 2 times (because not present, neither in cubs 1 nor 2).
(c)
Width times depth times height
(Whole block minus recess reckon)
.
(2x+2x+2x)*4x*4x – (2x*2x*4x)
.
Upper
two times above ( = below )
(4x*6x – 2x*2x) * 2
plus
all front surfaces (=back surface), therefore also once 2
(6x*4x) * 2
plus inner surfaces (three times the same)
(2x*4x) * 3
plus
Pages
(4x*4x) * 2