Chapter 13 – Surface Areas and Volumes

5. A conical pit of top diameter 3.5m is 12m deep. What is its capacity in kiloliters? 5. A conical pit of top diameter 3.5m is 12m deep. What is its capacity in kiloliters? October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,

4. If the volume of a right circular cone of height 9cm is 48 π cm^3, find the diameter of its base. 4. If the volume of a right circular cone of height 9cm is 48 π cm^3 find the diameter of its base. October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes [...]

3. The height of a cone is 15cm. If its volume is 1570 cm^3, find the diameter of its base. (Use π = 3.14) 3. The height of a cone is 15cm. If its volume is 1570 cm^3 find the diameter of its base. (Use π = 3.14) October 17, 2020 Category: Chapter 13 - [...]

2. Find the capacity in litres of a conical vessel with (ii) height 12 cm, slant height 12 cm 2. Find the capacity in litres of a conical vessel with (ii) height 12 cm slant height 12 cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 [...]

1. Find the volume of the right circular cone with (ii) radius 3.5 cm, height 12 cm 1. Find the volume of the right circular cone with (ii) radius 3.5 cm height 12 cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,

1. Find the volume of the right circular cone with (i) radius 6cm, height 7 cm 1. Find the volume of the right circular cone with (i) radius 6cm height 7 cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,

8. A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7cm. If the bowl is filled with soup to a height of 4cm, how much soup the hospital has to prepare daily to serve 250 patients? 8. A patient in a hospital is given soup daily in a cylindrical [...]

7. A lead pencil consists of a cylinder of wood with solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the [...]

6. The capacity of a closed cylindrical vessel of height 1m is15.4 liters. How many square meters of metal sheet would be needed to make it? 6. The capacity of a closed cylindrical vessel of height 1m is15.4 liters. How many square meters of metal sheet would be needed to make it? October 17, 2020 [...]

5. It costs Rs 2200 to paint the inner curved surface of a cylindrical vessel 10m deep. If the cost of painting is at the rate of Rs 20 per m^2, find (i) inner curved surface area of the vessel (ii) radius of the base (iii) capacity of the vessel 5. It costs Rs 2200 [...]