The sides of a triangle are in the ratio 3:5:6. If the perimeter of the triangle is 24 cm, find the length of each side.
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Let a and b be the sides and c the hypotenuse.
c2=a2+b2…..(1)
a+b+c=24……….(2)
ab2=24i.e.ab=48……..(3)
c2=(a+b)2–2ab=(24−c)2–96
(24−c)2−c2=96
(24−c+c)(24−c−c)=96
c=10
a+b=14
a−b=(a+b)2–2ab−−−−−−−−−−√=100–96−−−−−−√=2
from these two a=8 and b=6
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Answered by
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Let a and b be the sides and c the hypotenuse.
c2=a2+b2.(1)
a+b+c=24(2)
ab2=24i.e.ab=48(3)
c2=(a+b)2–2ab=(24−c)2–96
(24−c)2−c2=96
(24−c+c)(24−c−c)=96
c=10
a+b=14
a−b=(a+b)2–2ab−−−−−−−−−−√=100–96−−−−−−√=2
from these two a=8 and b=6
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