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Jlenok [28]
3 years ago
7

Help please!! Will mark as brainlist only with an explanation

Mathematics
1 answer:
natta225 [31]3 years ago
5 0

Answer:

F: 48

Step-by-step explanation:

Let x be the length of the side of the cube. RQ can be expressed as a triangle consisting of a diagonal of a face of the cube and the side length x. By the pythagorean theorem, we know that a^2+b^2=c^2. So, we can express the diagonal as x^2+x^2=c^2, giving us the value of c to be x\sqrt{2}. Now, we can once again use the pythagorean theorem to find RQ^2=2x^2+x^2=3x^2, so RQ=x\sqrt{3}=12, so x=4\sqrt{3}. To find the area of the shaded part, we multiply the length times width which gives us (4\sqrt{3})^2=48. So, the area of the shaded face of the cube is F: 48.

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