¿que volumen tiene el prisma que lina puede construir con sus cubos?

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

Could somebody me with this radical simplification?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?