Simplify (-2x^3)2•y•y^9

Simplify (-2x^3)^2 •y•y^9       Answer 4x^6y^10

Use the distance formula to find the length of  one of the longer lines and do the same for one of the shorter ones.

Longer line using the points (-5,5) and (0,-5):-
length = sqrt ( 5-- 5)^2 + ( -5-0)^2  =  sqrt 125

short line:-  using the points (-5,5) and (-1,7)
length = sqrt (-5--1)^2 + (5-7)^2 )  =  sqrt 29

So the area of the rectangle = sqrt125 * sqrt29 =  60.21  to nearest hundredth