Okay, another question! Im so sorry if this is annoying. Also please no joke answers, and if possible please explain so I can understand!

Rain made an error.

The expression should be

Note the term in bold which is 12. I've replaced 13 with this value. This is because the height of each lateral side is 12 inches, instead of 13 inches.

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The steps needed to be taken are therefore:

This means the triangular pyramid's surface area should be 223.5 square inches.

for me what is finding a good play list and going out because i can not lay down and relax so i usually go to a coffee shop. i also use the gum trick and this actually works. another advice is highlighting subjects it really does me remember certain things

step-by-step explanation: