Aspaceship traveled 32 million miles. in scientific notation that is miles. 3.2 × 10-7 3.2 × 10-6 3.2 × 106 3.2 × 107

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

How many degrees are there in the central angles in a circle

The length of a rectangular plot of land is given by the expression 6x^3y^4. the width of the plot is given by the expression 5x^5y^4z. find an expression to represent the area of the rectangular plot.