Yang Segitiga A Itu Sisinya 8 Cm Please Tolong Jawab

Materi : Bangun Datar


Keliling segitiga = s1 + s2 + s3
s1 = sisi 1
s2 = sisi 2
s3 = sisi 3

No. 1
a . 
Keliling = 8 + 6 + 10 = 24cm

b. karena segitiga sama kaki, maka
keliling = 12 + 10 + 12 = 34cm

c. karena segitiga sama sisi, mka
keliling = 14 + 14 + 14 = 3(14) = 42cm

No.2
a. K = 46cm
s1 = 15
s2 = 13
s3 = 46 - (15 + 13) = 18cm

b. K = 74cm
s1 = 24
s2 = s3 = (74 - 24) / 2 = 50/2 = 25
jadi s2 = 25cm
       s3 = 25cm

c. K = 108
s1 = s2 = s3
maka
s1 = 108/3
s1 = 36
jadi
s1 = 36cm
s2 = 36cm
s3 = 36cm

Yang a itu cmn ditambahin aja
C. keliling= 108
s1=s2=s3
maka, s1= 108/3 = 36
s1= 36 cm
s2= 36 cm
s3= 36 cm

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