Relax

Respuesta :

TheTinyItalian817

Answer:

6 millimeters

Step-by-step explanation:

A = L × W

A ÷ L = W

42 ÷ 7 = 6

Hrishii

Step-by-step explanation:

Perimeter of rectangle

[tex] = 2(7 + \frac{42}{7} ) \\ \\ = 2(7 + 6) \\ \\ = 2 \times 13 \\ \\ = 26 \: mm[/tex]