A factory ordered 17.12 (metric) tonnes of plastics to make smart phones. Each phone will use 42.8 grams of plastics. How many smart phones can be made from this order?

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.