some numerical questions based on Pythagoras theorem to find unknown side of a triangle #maths #class7

A right triangle has legs of length 3 cm and 4 cm. What is the length of the hypotenuse?

A ladder leaning against a wall forms a right triangle with the ground. If the ladder is 10 meters long and the foot of the ladder is 8 meters away from the wall, what is the height of the wall?

A right triangle has a hypotenuse of length 10 cm and one leg of length 6 cm. What is the length of the other leg?

A right triangle has legs of length 5 inches and 12 inches. What is the length of the hypotenuse?

A flagpole casts a shadow that is 20 feet long. If the angle of elevation of the sun is 60 degrees, what is the height of the flagpole? (Assume that the ground is level.)




Comments

Post a Comment

Popular posts from this blog

Carbon. Class 8 chemistry. Long Q&A

10. Question: Carbon dioxide occurs both in the free state and in the combined state. State three methods how carbon dioxide is added to the atmosphere. Answer: Three methods are: - Through respiration by living organisms - Combustion of fossil fuels - Volcanic eruptions and natural decomposition of organic matter 11. Question: In the laboratory preparation of carbon dioxide by action of a dilute acid on a metallic carbonate give: a) A balanced equation for the preparation  b) A reason for i) use of a wash bottle containing conc. H2SO4 ii) Not collecting the prepared gas over water iii) Not using dilute sulphuric acid as a reactant in the preparation. Answer: a) CaCO3 + 2HCl → CaCl2 + H2O + CO2 b) Reasons: i) Wash bottle with conc. H2SO4: To dry the gas ii) Not collected over water because CO2 is slightly soluble in water iii) Dilute H2SO4 isn't used because CaSO4 formed is insoluble and coats unreacted carbonate 12. Question: How would you prove experimentally that a) Carbon dioxi...
Read more