Question

Help me please
senin di kumpulin
no 3,4,5,6 jawab ya +cara and alasannya

Answer 1

3. misalkan x = lebar bagian bawah foto
lebar foto = 25- 2 (2,5) = 20
tinggi foto = 50 - 2,5 - x = 47,5  - x

25 : 50 = 20 : (47,5 - x)
47,5 - x = 20(50)/(25)
47,5 - x = 40
x = 7,5

4. DF /DH = EF/GH
10/DH = 8/12
DH = 10(12)/ (8)= 15
DF + FH = DH
10 + FH = 15
FH = 5

DE/EG = DF/FH
DE/3 = 10/5
DE = 3(10)/5 = 6

5)  AD = AC(AB) / BC
AD = 6(8)/ 10 = 4,8

6) Δ ADE sebangun ΔACB
<E = < B
<A = < A
<D = < C 
AD= 6 , AE = 9
AB = AD+DB = 21

AE/ AB = AD/AC
9/21 = 6 / AC
AC = 6(21)/(9)
AC = 14

AE + EC  =AC
9 + EC = 14
EC  = 5