Mensuration Formulas

 Mensuration Formulas

Mensuration Formulas for 2-Dimensional Figures
Shape	Area	Perimeter
Circle	πr²	2 π r
Square	(side)²	4 × side
Rectangle	length × breadth	2 (length + breadth)
Scalene Triangle	√[s(s−a)(s−b)(s−c), Where, s = (a+b+c)/2	a+b+c (sum of sides)
Isosceles Triangle	½ × base × height	2a + b (sum of sides)
Equilateral Triangle	(√3/4) × (side)²	3 × side
Right Angled Triangle	½ × base × hypotenuse	A + B + hypotenuse, where the hypotenuse is √A²+B²
Parallelogram	base × height	2(l+b)
Rhombus	½ × diagonal1 × diagonal2	4 × side
Trapezium	½ h(sum of parallel sides)	a+b+c+d (sum of all sides)

Mensuration Formulas for 3-D Figures

Under 3-D Figures, we can calculate the total surface area which is equal to curved surface area+ area of top and bottom. Curved surface area is also known as lateral surface area, and is measured in square units. Total surface area is also measured in square units whereas volume is measured in cubic units. So, find out the mensuration formulas for 3-D figures such as cone, cylinder, cube, cuboid, sphere, etc.

Mensuration Formulas for 3-Dimensional Figures
Shape	Area	Curved Surface Area (CSA)/  Lateral Surface Area (LSA)	Total Surface Area (TSA)
Cone	(1/3) π r² h	π r l	πr (r + l)
Cube	(side)³	4 (side)²	6 (side)²
Cuboid	length × breadth × height	2 height (length + breadth)	2 (lb +bh +hl)
Cylinder	π r² h	2π r h	2πrh + 2πr²
Hemisphere	(2/3) π r³	2 π r²	3 π r²
Sphere	4/3πr³	4πr²	4πr²