You can
put this solution on YOUR website!
a=40 b=42 c=hypotnuse
use above equation to solve for "c"

p= perimeter
once u have found "c" use above equation to find the perimeter.

A= Area of triangle b=base h=hieght
b=40 and h=42 use the above equation to find the area
you should be able to do the work as im not going to do ur homework since u posted the question from ur assignment. if u come out with the same answers then you did the work corectly. dont forget the units.