El Superyate Tetraedro diseñado por Jonathan Shwinge
es un tetraedro regular con aristas de 20 m de longitud.
La distancia r de una esquina al centro de la base (se
muestra en la imagen de abajo) es 11,5 m.
¿Cuál es la altura vertical, h, del tetraedro?
Redondea tu respuesta a la décima de metro más
cercana.

Step-by-step explanation:

13. A school is planning an excursion for all of their students to see the

penguins on Phillip Island. They find a company who can provide

two different types of coaches for the trip: one that holds 34

passengers and one that holds 51 passengers. The coach company

has 8 of the smaller coaches and 4 larger coaches available.

The hire cost $500 for a smaller coach and $700 for a larger coach.

If there are 374 students and teachers going on the trip,

determine the minimum total cost for the coach hire.