tolong jawab ya. no 21 sama 22.pake cara sama rumus

21) L1 = s × s
= 14 × 14
= 196 dm²
L2 = 2 × ½ × π × r²
= 2 × ½ × 22/7 × 7 × 7
= 154 dm²
L3 = 196 + 154 = 350 dm²

22) L1 = π × r²
= 3,14 × (6,5 + 3,5)²
= 3,14 × 10²
= 3,14 × 100
= 314 cm²
L2 = π × r²
= 22/7 × 3,5 × 3,5
= 38,5 cm²
L = 314 - 38,5 = 275,5 cm²