Question

Жду ,помогите !!!Ждуууу

Answer 1

2 3/8-1 1/4=2 3/8+1 2/8= 3 5/8
(3 5/8+2 3/8)×2=6×2=12 дм2

Answer 2

$1)2 \frac{3}{8} - 1 \frac{1}{4} = \frac{19}{8} - \frac{5}{4} = \frac{19- 10}{8} = \frac{9}{8}$
ширина = 9/8 см
2) P=(ширина+длина)×2
$( \frac{19}{8} + \frac{9}{8} ) \times 2 = \frac{28}{8} \times 2 = \frac{28}{4} = 7$
P=7 см