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bekas [8.4K]
4 years ago
5

Don't understand please help ;-;

Mathematics
2 answers:
quester [9]4 years ago
7 0

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

olchik [2.2K]4 years ago
3 0

Answer:

72cm^2

Step-by-step explanation:

12x6

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