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k0ka [10]
3 years ago
12

A) 7.746 B) 37.947 C) 30.984 D) 33.941

Mathematics
1 answer:
ratelena [41]3 years ago
6 0

9514 1404 393

Answer:

  B) 37.947

Step-by-step explanation:

Using the given formula, we find ...

  s = (12 +11 +7)/2 = 15

  A = √(15(15 -12)(15 -11)(15 -7)) = √1440 = 12√10 ≈ 37.947 . . . square yards

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