please jwb pakai cara bsk udh dikumpulin

langsung aja y

d1 = PR
d2 = QS

L∆ = ½ × a × t
∆PRS = ½ × PR × ST
240 = ½ × 30 × ST
240 = 15 × ST
16 = ST

d1 = PR = 30
d2 = QT + ST = 40 + 16 = 56

maka
L PQRS = ½ × d1 × d2
L PQRS = ½ × 30 × 56
L PQRS = 15 × 56
L PQRS = 840 cm²

jawabannya D

semoha berguna +_+