-5 < 3 + m <em>subtract 3 from both sides</em>
-5 - 3 < 3 - 3 + m
-8 < m → m > -8
8 cm 15 cm 20 cm What is the surface area of the cuboid?
2 answers:
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Check the picture below.
we know B is the midpoint of AC, and we know ED is 4 units, since AD is a total of 8, then AE must also be 4 units, meaning point E is the midpoint of AD.
since E is the midpoint of AD and B is the midpoint of AC, then EB is the midsegment of the triangle, and is parallel to the base DC.
∡ABE = 60°
∡AEB = 90°
