pls mohon jawab y, maaf klo buram

●MATHEMATICS SOLUTION●

PQ = cos θ × PR
= cos 30° × 20 cm
= (1/2)√3 × 20 cm
= 10√3 cm

QR = sin θ × PR
= sin 30° × 20 cm
= 1/2 × 20 cm
= 10 cm

L = p × l
= PQ × QR
= 10√3 cm × 10 cm
= 100√3 cm²

●Jawaban: D.●