Question

Kak minta tolong ya. pakai cara.
matematika

Answer 1

Verified answer

Bangun Datar.

L. ΔCDE = 96 cm²
½ × CE × DE = 96 cm²
12 cm × DE = 96 × 2
DE = 16 cm

DC = √(DE² + CE²)
DC = √(16² + 12²)
DC = 20 cm

L. ABCD = 300 cm²
DC × FB = 300 cm²
20 cm × FB = 300 cm²
FB = 15 cm

CB = √(FB² + FC²)
CB = √(15² + 8²)
CB = 17 cm

K. ABCD = 2(AB + CB)
= 2(20 + 17)
= 2(37)
= 74 cm ⬅ Jawab