Jawab pake cara yayaaya

3. L. persegi panjang = p × l = 20 ×(3+3)= 20 ×6 =120 cm^2
2 L. segi3 = a×t /2 = 2× 4×3 /2 = 12 cm^2

L. gab= 120 + 12 = 132 cm^2

4. L. persegi = s × s = 14× 14 = 196 cm^2
2 L. lingkaran = 2× 22/7 × r^2 = 2×22/7×7×7 = 308 cm^2

L. gab = 196 + 308 = 504 cm^2

JADIKAN JWBN TERBAIK