Answer:
72cm^2
Step-by-step explanation:
12x6
283 cm²
r = 3 cm
2 × 3.14 × 3 (3 + 12)
= 2 × 3.14 × 3(15)
= 2 × 3.14 × 45
= 282.6 cm²
= 283 cm²
