Area Formulas

Question 1

Area of Rectangle

Answer 1

Area = l × w

l = length
w = width

Question 2

Area of Square

Answer 2

Area = a ²

a = sides of the square

Question 3

Area of a Triangle

Answer 3

Area = 1/2 b×h

b = base
h = height

Question 4

Area of a Circle

Answer 4

Area = πr²

r = radius of the circle

Question 5

Area of a Trapezoid

Answer 5

Area = 1/2 (a + b)h

a =base 1
b = base 2
h = vertical height

Question 6

Area of Ellipse

Answer 6

Area = πab

a = radius of the major axis
b = radius of the minor axis

Question 7

Circumference of Circle

Answer 7

2 π r

r = radius of circle