9th mathematics exercise question with answer

## Ratio and Proportion – Full Chapter – Class IX

After studying the chapter Ratio and Proportion and their general form; to understand and differentiate between different types of proportion; to acquire skills of writing proportion; to solve problems on time and work involving proportions; to apply proportion in day to day life situations. 2.4.1 Introduction to Ratio and Proportion In a ratio a :… Continue reading Ratio and Proportion – Full Chapter – Class IX

## Mensuration – Class VIII

A solid occupies fixed amount of space. Solids occur in different shapes. Observe the following shapes. These shapes (cuboid, cube, triangular prism, cylinder, cone etc) are known as three dimensional objects. Surface area of cuboid- Mensuration  Lateral Surface area of cuboid = 2h(l + b) Total surface area of cuboid = 2(lb +bh + lh) Here… Continue reading Mensuration – Class VIII

## Quadrilaterals – Full Chapter – Class VIII

A closed figure having four sides formed by joining four points, no three of which are collinear, in an order is called quadrilateral. For example: Quadrilateral is the union of four line segments that join four coplanar points; no three of which are collinear and each segment meet exactly two other lines, each at their… Continue reading Quadrilaterals – Full Chapter – Class VIII