Maths formulas for Class 9 are provided here for the students who consider Mathematics subject as a nightmare and difficult to understand. This may cause them to feel reluctant and lose interest from studies. Therefore, to help them understand Maths in a simple way, we have accumulated all the important formulas for 9th standard Maths subject, which students can easily remember.
The formulas are given here as per the NCERT syllabus for all the topics such as Algebra, Geometry, Polynomials, etc.
Class 9 Math Formulas Tables
When you are clear with the logic behind every formula, solving any kind of problem become easier. If you are perfect with all the below-mentioned formulas in Maths for Class 9 that is listed chapter-wise, nothing can stop you from scoring maximum marks in the final examination.
Geometry
| Geometry Shapes Formulas for Class 9 | ||
|---|---|---|
| Geometric Figure | Area | Perimeter |
| Rectangle | A= l × w | P = 2 × (l+w ) |
| Triangle | A = (1⁄2) × b × h | P = a + b + c |
| Trapezoid | A = (1⁄2) × h × (b1+ b2) | P = a + b + c + d |
| Parallelogram | A = b × h | P = 2 (a+b) |
| Circle | A = π r2 | C = 2 π r |
Algebra
Surface Area and Volumes
| Shape | Surface Area | Volume |
| Cuboid | 2(lb + bh +lh) l= length, b=breadth, h=height | lbh |
| Cube | 6a2 | a3 |
| Cylinder | 2πr(h+r) r = radius of circular bases h = height of cylinder | πr2h |
| Cone | πr(l+r) r=radius of base l=slant height Also, l2=h2+r2, where h is the height of cone | (1/3)πr2h |
| Sphere | 4πr2 | (4/3)πr3 |