tolong kerjakan nomor 6 dan 7

6. Luas= 35 cm × 12 cm = 420 cm2
Keliling = 2 × ( 35 cm + 15 cm ) = 100 cm
7. Luas= ( 12 cm + 12 cm + 8 cm+8cm)×6 cm. -----------------------------------------=120cm2
2
Keliling = 12cm+12cm+8cm+8cm+10cm+10cm= 60cm