The answer is $1.36 because you have to add $3.40+3.40 because he buys two airplanes. Afterwards you multiply times .20 and get 1.36 because you always have to move 20% two places to the left
A ) P = 6 * 0.5 = 3 m ( correct ) B ) Apothem = 0.5 * √3 / 2 = 0.433 m = 43.3 cm ( correct ) C ) A = 6 * 0.5² √3 / 4 = 0.649519 m² ≠ 1.299 m² ( false ) D ) r = 0.5 m ( correct ) Answer: C ) is false
