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romanna [79]
4 years ago
14

What is the length of the red vertical edge? Brief explanation please

Mathematics
2 answers:
Ivahew [28]4 years ago
4 0
That's a right triangle

remember, if  the legs of a right triangle measure a and b and the hypootnuse is c then a²+b²=c²

so

hypotnuse is longest side, the one oposite the right angle
in this case, it is 5
one leg is 4
and the other one is red, let's call it x

so
x²+4²=5²
x²+16=25
minus 16 both sides
x²=9
sqrt both sides
x=3

the length of the red vertical edge is 3cm
STatiana [176]4 years ago
4 0
the length red vertical edge is 3
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