Question

помогите пожалуйста срочно.

Answer 1

$p = 4 \times 2 \frac{3}{4} = 4 \times \frac{11}{4} = 11 \: sm \\ s = {(2 \frac{3}{4}) }^{2} = 2 \frac{3}{4} \times 2 \frac{3}{4} = \frac{11}{4} \times \frac{11}{4} = \frac{121}{16} = 7 \frac{9}{16} {sm}^{2}$