Two sides of a triangle are 20 cm and 22 cm, semi-perimeter is 36 cm. Find the third side
Answers
Answered by
0
Answer:
Third side = 30 cm
Step-by-step explanation:
let the third side be x
- semi-perimeter of ∆= P/2= 36
- 36 = sum of sides / 2
- 36= (20+22+x)/2
- 36× 2= (42+x)
- 72= 42+x
- x = 72-42 = 30cm
Hope you got the answer:)
Answered by
0
Answer:
6cm
Step-by-step explanation:
Semiperimeter, S=18 cm
Let the side of the triangle be a,b,c such that
a=16 cm, b=14 cm,c=?
S= a+b+c/2
=16+14+c/2
18= 30+c/2
c=36−30=6 cm
Therefore, third side of triangle is 6 cm
hopefully it will helpful
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