Question

Tolong di jawab besok dikumpulin pliss susah banget pake caranya entar saya kasih 5 bintang

Answer 1

Verified answer

2. a.panjang sisi miring
S*=12*+5*
S*=144+25
S*=169
S* = √169
S = 13 cm
b.Luas segitiga = 1/2 •a•t
=1/2•5•12
= 30

kalo gak salah ya

Answer 2

Kelas 8

No 1

Dik :
a = 6 cm
b = 18 cm
c = 20 cm

Dit : r = ...

s = 1/2 (a + b + c)
= 1/2 (6 + 18 + 20)
= 1/2 × 44

= 22



No 2

a. c = 12² + 5²
c = √144 + 25
c = √169
c = 13 cm

b. s = 1/2 (5 + 12 + 13)
s = 1/2 × 30
s = 15 

L = √(S . (S - a) . (S - b) . (S - c))
= √(15 . (15 - 5) . (15 - 12) . (15 - 13))
= √(15 × 10 × 3 × 2)
= √900
= 30 cm²

c. r = abc / 4L
= (5 × 12 × 13) / (4 × 30)
= 780 / 120
= 6,5 cm