y^2 +6^2 = 12^2
y^2 +36 = 144
y^2 = 108
sqrt(108) = 10.392 = 6sqrt(3)
Answer is B 6sqrt(3)
(2,4) is the only possible answer because it is the only one in the shaded area
1841 ≈ 1800 (nearest hundred)
964 ≈ 1000 (nearest hundred}
<span>1,841 + 964 </span>≈ 1800 + 1000 = 2800 (Answer B)