Class 9 Maths › Unit-wise tests
Class 9 Mensuration Unit Tests
Perimeter, arc length and areas; Heron and Brahmagupta; cuboids, cylinders, cones, pyramids, spheres and hemispheres.
27 teaching periods in the supplied syllabus; this is not examination mark weightage.
Scope
- Perimeter, circumference and π
- Historical approximations and irrationality of π
- Arc length and applications
- Rectangle, parallelogram and triangle areas
- Equal areas divided by a median
- Heron’s formula
- Squaring a rectangle
- Area of a circle and its derivation
- Sector and segment areas
- Brahmagupta and Heron as a special case
- Cuboids, cubes and their relationship
- Cylinder area and volume
- Cone dimensions and formulas
- Pyramid base, apex, area and volume
- Sphere and hemisphere area and volume
- Scaling and systematic comparisons
Choose a paper
Written proofs, constructions and case responses require self- or teacher assessment; MCQs are automatically scored.