Can someone do these two for me?

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Can someone pls ! pls answer all. no explanation needed..

How can you construct perpendicular lines and prove theorems about perpendicular lines