6-8 ya. mksih..udh bntu.

6)Trapesium samakaki KLMN
a) nilai x = sudut KLM
= 70°
b) nilai y = 180° - sudut KLM
= 180° - 70°
=110°
c) L = 1/2×(KL+MN)×t
= 1/2×(23+17)×14
= 1/2×40×14
= 280cm^2
7) PS = QR = 25cm
TS = TR - PQ
= 22cm - 7cm
= 15cm
PT = akar (PS^2 - TS^2)
= akar (25^2 - 15^2)
= akar (625 - 225)
= akar 400
= 20cm (a)
8) BD = 50cm
AE = 24cm
EF = 2×AE = 2×24cm = 48cm
AC = 2×AE + EF
= 2×24 + 48
= 48+48 = 96cm
L daerah yang diarsir
= (1/2×AC×BD) - (1/2×EF×BD)
= (1/2×96x50) - (1/2×48×50)
= 2400 - 1200
= 1200cm^2 (c)