Ayo help me bruddas ASAP

Classify the following triangle check all that apply

What is the area of the triangle 10 13 12

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm