Respuesta :

Answer:

C

Step-by-step explanation:

if you multiply 2.3 times pi you get the answer

Answer:

3. A

4. D

Step-by-step explanation:

r : radius

area of a circle = 3.14×r²

3,14×11^2 = 379,94

3,14×(2,3÷2)^2 = 4,15265

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