Pls help me answer this! I tried to answer it but i don’t get it. Thx y’all so much!
2 answers:
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Try this suggested example.
PS. the 1st step is marked with red, the 2d step - with green, the 3d step - with blue colours, then the final step is marked with orange.
Answer:
Part 1)
Part 2)
Step-by-step explanation:
we know that
A cube has six equal square faces
A cross-section perpendicular to one face of the cube is equal to a square
see the attached figure to better understand the problem
Part 1) Find the area of the cross section
The area of the square is
where
b is the length side of the square
we have
substitute
Part 2) Find the perimeter of the cross section
The perimeter of the square is
where
b is the length side of the square
we have
substitute
