Luas daerah yang diarsir berapa ya?

8 x 8 /2 = 32

8 x 5 /2 = 20

8x3/2 = 12

(32-12) + (20-12)
20 + 8
28

Lsegitiga spq = 1/2 × 8 × 8
= 32
Lsegitiga pqt = 1/2 × 8 × 3
= 12
Lsegitiga pqr = 1/2 × 8 × 5
= 20

Lsegitiga spt = 32-12
= 20
Lsegitiga tqr = 20-12
= 8

L. daerah yg diarsir = 20+8
= 28

Jawanban C