Class 10th Chapter 12 Surface Areas and Volumes Example 7 New NCERT Maths CBSE Board

Class 10th Chapter 12 Surface Areas and Volumes Example 7 New NCERT Maths CBSE Board Full chapter's playlist👉Class 10th chapter 12 Surface Areas and Volumes Maths New Ncert CBSE Board full chapter playlist:    • Class 10th chapter 12 Surface Areas a...   Here we have solved Example number 7 from ncert new Mathematics text book prescribed by cbse board latest syllabus. Topic discussed: Class 10 Ch:12 Example 7 surface area and volume Example 7 : A solid toy is in the form of a hemisphere surmounted by a right circular cone. Theheight of the cone is 2 cm and the diameter of the base is 4 cm. Determine the volume of the toy. If a right circular cylinder circumscribes the toy, find the difference of the volumes of the cylinder and the toy.(Take  = 3.14) Example 6 : A juice seller was serving his customers using glasses as shown in Fig. 12.13. The inner diameter of the cylindrical glass was 5 cm, but the bottom of the glass had a hemispherical raised portion which reduced the capacity of the glass. If the height of a glass was 10 cm, find the apparent capacity of the glass and its actual capacity. (Use pie = 3.14) Example 5 : Shanta runs an industry in a shed which is in the shape of a cuboid surmounted by a half cylinder (see Fig. 12.12). If the base of the shed is of dimension 7 m × 15 m, and the height of the cuboidal portion is 8 m, find the volume of air that the shed can hold. Further, suppose the machinery in the shed occupies a total space of 300 m3, and there are 20 workers, each of whom occupy about 0.08 m3 space on an average. Then, how much air is in the shed? (Take pie = 22/7 ) 👉   • Class 10th Chapter 12 Surface Areas a...   Example 4 : Mayank made a bird-bath for his garden in the shape of a cylinder with a hemispherical depression at one end (see Fig. 12.9). The height of the cylinder is 1.45 m and its radius is 30 cm. Find th total surface area of the bird-bath. (Take pie = 22/7 ) 👉   • Class 10th Chapter 12 Surface Areas a...   Example 3 : A wooden toy rocket is in the shape of a cone mounted on a cylinder, as shown in Fig. 12.8. The height of the entire rocket is 26 cm, while the height of the conical part is 6 cm. The base of the conical portion has a diameter of 5 cm, while the base diameter of the cylindrical portion is 3 cm. If the conical portion is to be painted orange and the cylindrical portion yellow, find the area of the rocket painted with each of these colours. (Take pie = 3.14) 👉   • Class 10th Chapter 12 Surface Areas a...   Example 2 : The decorative block shown in Fig. 12.7 is made of two solids — a cube and a hemisphere. The base of the block is a cube with edge 5 cm, and the hemisphere fixed on the top has a diameter of 4.2 cm. Find the total surface area of the block. (Take pie = 22/7 ). 👉   • Class 10th Chapter 12 Surface Areas a...   Example 1 : Rasheed got a playing top (lattu) as his birthday present, which surprisingly had no colour on it. He wanted to colour it with his crayons. The top is shaped like a cone surmounted by a hemisphere (see Fig 12.6). The entire top is 5 cm in height and the diameter of the top is 3.5 cm. Find the area he has to colour. (Take pie = 22/7 ) 👉   • Class 10th Chapter 12 Surface Areas a...   #10thmaths #surfaceareasandvolumesclass10 #mensuration #10thclass #maths10thclass #cbseboard #maths #10thmathsncert #class10 #surfaceareasandvolumes #cbse10maths #10th #10thclassmaths #10thcbse