Ncert solutions for class 8 maths chapter 13 exercise 13 1
Rating:
9,1/10
1190
reviews

A hemispherical depression is cut out from one face of a cubical wooden block such that the diameter of the hemisphere is equal to the edge of the cube. It is 10 m deep. The diameter of the moon is approximately one fourth of the diameter of the earth. In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. How many bottles can be filled in 4 hours. Visit to main page or of the page. So you can download this book instantly and save it on your mobile or computer.

Let R cm and r cm be respectively the external and internal radii of the hemispherical vessel. Question 1 A solid is in the shape of a cone standing on a hemisphere with both their radii being equal to 1 cm and the height of the cone is equal to its radius. Therefore, the parking charges are not in direct proportion to the parking time. How many bricks of dimensions 22. Solutions of all questions are described completely.

Days 65 52 Machine 40 a Here, the number of machines and the number of days are in inverse proportion. A small indoor greenhouse herbarium is made entirely of glass panes including base held together with tape. All Surface Areas and Volumes Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. Let distance covered in the map be Here actual distance and distance covered in the map are in direct proportion. Answer Let r be the radius of the sphere. Do you also agree that the value of truthfulness leads to more respect in the society? Q6: If 2 persons can repair a room in 12 days.

Actual distance in km 16 96 Distance covered in map in cm 1 a Here actual distance and the distance covered in the map are in direct proportion. The radius of each of the depressions is 0. Find its curved surface area. It takes 500 complete revolutions to move once over to level a playground. If the change does not take place, find the probability that it is due to the appointment of C. If a family has two children, what is the conditional probability that both are girls given that i the youngest is a girl, ii at least one is girl? It is to be covered with a decorative cloth.

By measuring the amount of water, it holds, a child finds its volume to be 345 cm3. All Direct and Inverse Proportions Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. Click here to see in English or and in Hindi or go back to main page. Find the width of the reservoir. How many sugar crystals are there in i 5 kg of sugar? If the height and diameter of the cylindrical part are 2. How long would the food last if there were 15 more animals in his cattle? Move to of the page. Sol: a Time taken and the men required to complete the task is in inverse proportion because more workers will take less time to complete a work and less workers will take more time to complete the same work.

Sol: Here height of the pole and length of the shadow are in direct proportion. The answer to each question in every exercise is provided along with complete, step-wise solutions for your better understanding. Sol: i Let the number of days be x Persons 2 x Days 4 1 Here, the number of persons and the number of days are in inverse proportion. Various floating point numbers are rational since they can be represented as fractions example, 1. The bigger of dimensions 25 cm × 20 cm × 5 cm and the smaller of dimensions 15 cm × 12 cm × 5 cm. Find the probability distribution of the number of defective bulbs. Find the ratio of the total surface of the given cube and that of one of the cuboids.

Find i the lateral or curved surface area of a closed cylindrical petrol storage tank that is 4. A cylindrical pillar is 50 cm in diameter and 3. Find the mass of the pole, given that 1 cm 3 of iron has approximately 8g mass. If each cone has a height of 2 cm, find the volume of air contained in the model that Rachel made. Tell how long would it take for 3 persons for repairing the same room? Click here to see in Hindi or and in English or go back to main page.

How much canvas cloth is required to just cover the heap? Q10: Two men can fit new windows in a house in 4 days i One of the persons fell ill before the work started. Find the probability that both are boys, if it is known that i one of them is a boy ii the older child is a boy. The capacity of a cuboidal tank is 50000 litres of water. Important Questions for Practice based on Surface Areas and Volumes Exercise 13. All links are given below. The floor of a rectangular hall has a perimeter 250 m.