1. 3cm ,M is the midpoint
2. ND , 3cm,
3. BC, According to the diagram
4. 12 Cm
Brain is about1500g that to at the age of Fifteen
Ok 1st for the triangles you multiply the base X height then multiply by two. For EX: 5x10=50/2=25 so that's the answer for your first triangle.
Yes it is possible for 15,000 people to ride the thrill ride in 1 day....