1. The problem is to find a website or link that teaches mensuration for grade 9 and 10 students in Nepali language. 2. Mensuration involves formulas to calculate areas, volumes, and surface areas of geometric shapes like squares, rectangles, triangles, circles, cylinders, cones, and spheres. 3. Important formulas include: - Area of rectangle: $$A = l \times w$$ - Area of triangle: $$A = \frac{1}{2} \times b \times h$$ - Area of circle: $$A = \pi r^2$$ - Volume of cylinder: $$V = \pi r^2 h$$ - Volume of cone: $$V = \frac{1}{3} \pi r^2 h$$ - Volume of sphere: $$V = \frac{4}{3} \pi r^3$$ 4. To learn these concepts in Nepali, you can visit the website "https://www.hamroeducation.com" which offers Nepali medium educational content including mensuration topics for grades 9 and 10. 5. This site provides explanations, examples, and practice problems in Nepali language, making it easier for students to understand and master mensuration. 6. Using such resources will help students grasp the concepts clearly and perform well in their exams.