Whats the formula for area?

Triangle

(base*height)/2

square

length*width

circle

(radius^2)*pi

eclipse

pi*a*b

sector

(r^2*@)/2

@=angle in radians

Base x height

Source(s): Algebra 2

Area of rectangle – length × breadth

Area of square- side × side

Area of triangle – 0.5 × base × height