Answer:

Step-by-step explanation:

: Do cross multiplication

: Multiply the numbers : 4 and 14

Move 3 to right hand side and change it's sign

Subtract 3 from 56

The value of k is 53
Hope I helped!
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~TheAnimeGirl
Answer:
A ≈ 12.57
Step-by-step explanation:
You have to take the formula: A = πr^2
1) Plug in what you know: A = π•2^2
2) π = 3.14 and 2^2 = 4
3) Multiply to get: 12.56637
4) Round
A ≈ 12.57