tolong di bantu yh no 1 - 3.. bsok mau di kumpulin.. pke caranya yh

1) L1 = s²
= 14 × 14
= 196 cm²
L2 = 4 × ½ × π × r²
= 4 × ½ × 22/7 × 7 × 7
= 308 cm²
Lttl = 196 + 308 = 504 cm²

2) L1 = ½ × d1 × d2
= ½ × ( 10 + 10) × ( 10 + 4)
= ½ × 20 × 14
= 140 cm²
L2 = ½ × ( a + b ) × t
= ½ × ( 6 + 18) × 10
= ½ × 24 × 10
= 120 cm²
Lttl = 140 + 120 = 260 cm²

3) L1 = s²
= 23 × 23
= 529 cm²
L2 = ½ × a × t
= ½ × 23 × 12
= 138 cm²
Lttl = 529 + 138 = 667 cm²