Noodle light box slogan

=205×4,

=820 cm,

=82 (decimeter)

A: At least 82 decimeters of aluminum alloy strip is required.

(2)70× 15×2+ 120× 15×2+70× 120×2

=2 100+3600+ 16800,

=22500 (square centimeter)

=225 (square decimeter);

A: It takes 225 square decimeters of light box cloth to make such a light box.