For different shapes, the equation to calculate their area is different. I'll name a couple of the most commonly used:
Square:
A=s^2, where s is the side length.
Rectangle:
A=lw, where l is length. and w is width.
Triangle:
A=0.5bh, where b is base, and h is height.
Circle:
A=πr^2, where r is radius.
Hope this helps!!
