Chapter 18 · Class 9 ICSE · Formula Sheet
Surface Area & Volume Formulas — Class 9 ICSE
Find surface area and volume of cylinders, cones, spheres, and hemispheres.
Key Formulas
Heron's Formula
A = \sqrt{s(s-a)(s-b)(s-c)}, \quad s = \dfrac{a+b+c}{2}
CSA of Cone
\pi r l
Volume of Cone
\dfrac{1}{3}\pi r^2 h
SA of Sphere
4\pi r^2
Volume of Sphere
\dfrac{4}{3}\pi r^3
Worked Examples
1Using: Area of Rectangle
Find the area of a rectangle with length 12 cm and breadth 5 cm.
Step 1: Area = l x b
Step 2: = 12 x 5 = 60 sq. cm.
Answer: 60 sq. cm
2Using: Perimeter of Square
Find the perimeter of a square with side 8 m.
Step 1: Perimeter = 4a
Step 2: = 4 x 8 = 32 m.
Answer: 32 m
Practice Now
Apply these formulas with 60+ practice questions and AI-powered doubt clearing.
More Class 9 ICSE Formulas
Frequently Asked Questions
How many formulas are in Class 9 ICSE Surface Area & Volume?+
How to remember Surface Area & Volume formulas easily?+
Are these Surface Area & Volume formulas enough for exams?+
Master Surface Area & Volume on SparkEd
Go beyond formulas. Practice at three difficulty levels with instant feedback, step-by-step solutions, and an AI coach.
Start Practising FreeSparkEd Maths provides free formula sheets for Class 1-10 across 7 education boards. All formulas are aligned to the 2025-26 syllabus.