6) Eight points are placed at the vertices of a cube, side length = 2cm. How many different triangles can
be made by joining three of the points? What is the area of the smallest of these triangles?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Dis the correct answer