Question

Tolong ya untuk belajar ukk

Answer 1

18) p = 6+l
maka :
K = 2.(p+l)
88 = 2.(6+l+l)
88:2 = 6+2l
44 = 6+2l
44-6 = 2l
38 = 2l
l = 38/2
l = 19 cm...(C)


19) K = (4.2)+(1.8)+(1,5.2)
= 8+8+3
= 19 cm...(B)



20) L = a.t
= 11.6
= 66 cm²...(A)

Answer 2

18.
Diketahui :
K = 88cm
L = L
P = 6 + L

Jawab 
2(P+L) = 88cm
2(6+L +L) = 88CM
  6+2L        = 88/2
        6 + 2L = 44
              2L = 44-6
             2L = 38
             L = 19 CM (C)

19.
 Keliling = (4x2) + (1x8) + (1,5 x2)
               = 8 + 8 + 3 = 19cm (b)

20. Luas jajar genjang = Alas x tinggi
Diketahui : Alas = 6cm
         tinggi = 11cm
Maka Luas = 6x11 = 66cm²