Question

помогите!
даю 15 баллов!​

Answer 1

1) 2,5 см²

$s = \frac{1}{2} ad \times bd = \frac{1}{2} \times 1 \times (2 + 3) = \frac{1}{2} \times 5 = 2.5$

2) 1 см²

$s = \frac{1}{2} ad \times cd = \frac{1}{2} \times 1 \times 2 = 1$

3) 1,5 см²

$s = 2.5 - 1 = 1.5$