What is areas formula?

Answer 1

The formula for area is depending on the shape

Triangle

Area = ½ × b × h

b = base

h = vertical height Square

Area = a2

a = length of side

Rectangle

Area = w × h

w = width

h = height Parallelogram

Area = b × h

b = base

h = vertical height

Trapezoid (US)

Trapezium (UK)

Area = ½(a+b) × h

h = vertical height Circle

Area = π × r2

Circumference = 2 × π × r

r = radius

Ellipse

Area = πab

Sector

Area = ½ × r2 × θ

r = radius

θ = angle in radians