Mathematics is like music – Enjoy it!!!
This playlist consists of 101 questions, concepts, theorems and examples of class 9 chapter 13 (Surface Areas and Volumes) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial. Every video in this series has been thoroughly visualised…
Read MoreExample 12: A child playing with building blocks, which are of the shape of cubes, has built a structure as shown in Fig. 13.25. If the edge of each cube is 3 cm, find the volume of the structure built…
Read MoreExample 11: A wall of length 10 m was to be built across an open ground. The height of the wall is 4 m and thickness of the wall is 24 cm. If this wall is to be built up…
Read MoreQuestion 9: A river 3m deep and 40m wide is flowing at the rate of 2km per hour. How much water will fall into the sea in a minute? Question 8 Ex: 13.6 | Question 1
Read MoreQuestion 8: A solid cube of side 12 cm is cut into eight cubes of equal volume. What will be the side of the new cube? Also, find the ratio between their surface areas. Question 7 Question 9
Read MoreQuestion 7: A godown measures 40 m × 25 m × 15 m. Find the maximum number of wooden crates each measuring 1.5 m × 1.25 m × 0.5 m that can be stored in the godown. Question 6 Question…
Read MoreQuestion 6: A village, having a population of 4000, requires 150 litres of water per head per day. It has a tank measuring 20m×15m×6m. For how many days will the water of this tank last? Question 5 Question 7
Read MoreQuestion 5: The capacity of a cuboidal tank is 50000 litres of water. Find the breadth of the tank, if its length and depth are respectively 2.5 m and 10 m. Question 4 Question 6
Read MoreQuestion 4: Find the cost of digging a cuboidal pit 8 m long, 6 m broad and 3 m deep at the rate of Rs. 30 per m³. Question 3 Question 5
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