Question

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

Answer 1

9514 1404 393

Answer:

B) 37.947

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