Question

don't understand please help ;-;

Answer 1

Answer:

72cm^2

Step-by-step explanation:

12x6

Answer 2

Answer:

283 cm²

Step-by-step explanation:

r = 3 cm

2 × 3.14 × 3 (3 + 12)

= 2 × 3.14 × 3(15)

= 2 × 3.14 × 45

= 282.6 cm²

= 283 cm²