19/03/2020 Surface Areas and Volumes of Solid Shapes(Study by Topics Junior Class) 19/03/2020 0Comments by Gate Academy Welcome to your Surface Areas and Volumes of Solid Shapes(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. The number of silver coins, 2 cm in diameter and of thickness 2 mm, is required to melt and form a cuboid of dimension 5 cm X 10 cm X 3 cm is: 650 coins 800 coins 700 coins 750 coins 2. The length of the diagonal of a cube inscribed in a sphere of radius 10 cm is: 15 cm 20 cm 10 cm 5 cm 3. If you enlarge a rectangular prism with dimensions of 1 cm. by 2 cm. by 3 cm. by a scale factor of 3, what will its new dimensions be? 3 cm. by 4 cm. by 10 cm. 3 cm. by 5 cm. by 6 cm. 3 cm. by 6 cm. by 9 cm. 3 cm. by 15 cm. by 26 cm. 4. A cubical block of side 8 cm is surmounted by a hemisphere. The greatest diameter of the hemisphere is: 4 cm 8 cm 12 cm 16 cm 5. Which of the following statements about a cylinder is false? A cylinder has two curved surfaces A cylinder has two planes A cylinder has two vertices A cylinder has one curved surface 6. Volume of the cone is: 4/3 πr³ 1/3 πr²h πr²h 2/3 πr³ 7. An open cylindrical drum has a circular base of radius 1¾m. its height is 1.5m. calculate the total surface area 11m² 18m² 26m² 20m² 8. What is the unit for surface area? Units^3 Units^2.2 Units^3.14 Units^2 9. What is the shape of the plane face of a cylinder? Triangle Circle Rectangle Square 10. What is the surface area of the rectangular prism? 210 358 179 420 11. The surface area of a cylinder is 31cm2. The surface area of a similar cylinder three times as high is 93cm² 34cm² 62cm² 124cm² 12. Find the height of the cylinder if its volume and radius are 154cm3 and 3½cm respectively. 357 cm 1694 cm 44 cm 4 cm 13. How many edges has a cube? 16 12 10 8 14. What is the surface area of the cyliner? 2412.74 804.25 1005.31 96 15. The radii of the ends of a frustum of a cone 40 cm high are 38 cm and 8 cm. The slant height of the frustum of cone is: 50 cm 38.93 cm 26.46 cm 60.96 cm 16. A cylinder, a cone and a hemisphere are of the same base and of the same height. The ratio of their volumes is: 3 : 2 : 1 3 : 1 : 2 1 : 2 : 3 2 : 1 : 3 17. What is the volume of the cone below? 742.42 703.72 1340.21 3446.4 18. Find the total Surface area of a cone with radius 3, slant height of 5. 94.2 units squared 78.5 units squared 28.26 units squared 122.46 units squared 19. A cylinder has radius 14cm and length 10cm. find its curved surface area 440cm² 280cm² 220cm² 1760cm² 880cm² 20. If the volume of the cube is 729 cm2, then its edge is: 9 cm 6 cm 7 cm 8 cm 1 out of 20 Time is Up! Time's up