Los triángulos ABC y DEF son equiláteros (ver figura). El triángulo ABC tiene 81 cm. de perímetro. Sabiendo que el lado DF mide las dos terceras partes de lo que mide el lado AB. ¿Cuál es el perímetro de la figura sombreada?

Juliana says that she can use the patterns of equivalent ratios in the multiplication table below to write an infinite number of ratios that are equivalent to 6: 10. which statement explains whether juliana is correct? she is correct because she can multiply 6 and 10 by any number to form an equivalent ratio. she is correct because 6: 10 can be written as 1: 2 and there are an infinite number of ratios for 1: 2. she is not correct because the multiplication table does not include multiples of 10. she is not correct because 6: 10 is equivalent to 3: 5 and there are only 9 ratios in the multiplication table that are equivalent to 3: 5.