Chapter 13 – Surface Areas and Volumes
4. The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?
17
Oct
4. The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon? 4. The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume [...]
3.The diameter of a metallic ball is 4.2cm. What is the mass of the ball, if the density of the metal is 8.9 g per cm^3?
17
Oct
3.The diameter of a metallic ball is 4.2cm. What is the mass of the ball, if the density of the metal is 8.9 g per cm^3? 3.The diameter of a metallic ball is 4.2cm. What is the mass of the ball if the density of the metal is 8.9 g per cm^3? October 17, 2020 [...]
2. Find the amount of water displaced by a solid spherical ball of diameter (ii) 0.21 m
17
Oct
2. Find the amount of water displaced by a solid spherical ball of diameter (ii) 0.21 m 2. Find the amount of water displaced by a solid spherical ball of diameter (ii) 0.21 m October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
2. Find the amount of water displaced by a solid spherical ball of diameter (i) 28 cm
17
Oct
2. Find the amount of water displaced by a solid spherical ball of diameter (i) 28 cm 2. Find the amount of water displaced by a solid spherical ball of diameter (i) 28 cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
1. Find the volume of a sphere whose radius is (ii) 0.63 m
17
Oct
1. Find the volume of a sphere whose radius is (ii) 0.63 m 1. Find the volume of a sphere whose radius is (ii) 0.63 m October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
1. Find the volume of a sphere whose radius is (i) 7 cm
17
Oct
1. Find the volume of a sphere whose radius is (i) 7 cm 1. Find the volume of a sphere whose radius is (i) 7 cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
9. A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required.
17
Oct
9. A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required. 3. The height of a cone is 15cm. If its [...]
8. If the triangle ABC in the Question 7 is revolved about the side 5cm, then find the volume of the solids so obtained. Find also the ratio of the volumes of the two solids obtained in Questions 7 and 8.
17
Oct
8. If the triangle ABC in the Question 7 is revolved about the side 5cm, then find the volume of the solids so obtained. Find also the ratio of the volumes of the two solids obtained in Questions 7 and 8. 8. If the triangle ABC in the Question 7 is revolved about the side [...]
7. A right triangle ABC with sides 5cm, 12cm and 13cm is revolved about the side 12 cm. Find the volume of the solid so obtained.
17
Oct
7. A right triangle ABC with sides 5cm, 12cm and 13cm is revolved about the side 12 cm. Find the volume of the solid so obtained. 12cm and 13cm is revolved about the side 12 cm. Find the volume of the solid so obtained. 7. A right triangle ABC with sides 5cm October 17, 2020 [...]
6. The volume of a right circular cone is 9856 cm^3. If the diameter of the base is 28cm, find (i) height of the cone (ii) slant height of the cone (iii) curved surface area of the cone
17
Oct
6. The volume of a right circular cone is 9856 cm^3. If the diameter of the base is 28cm, find (i) height of the cone (ii) slant height of the cone (iii) curved surface area of the cone 6. The volume of a right circular cone is 9856 cm^3. If the diameter of the base [...]