Explain how to pass a plane through a cube so that the intersection is:

a) an equilateral triangle
b) a trapezoid
c) a pentagon
d) a hexagon

What is the area of the triangle 10 13 12

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Cate purchases $1600 worth of stock and her broker estimates it will increase in value by 4.2% each year. after about how many years will the value of cate's stock be about $2000