Saved Bookmarks
| 1. |
The adjoining pie chart gives the marks scored in an examination by a student inHindi, English, Mathematics, Social Science and Science. If the total marks obtainedby the students were 540, answer the following questions.(1) In which subject did the student score 105marks?(Hint: for 540 marks, the central angle = 360°.So, for 105 marks, what is the central angle?)90°(ii) How many more marks were obtained by thestudent in Mathematics than in Hindi?(i) Examine whether the sum of the marks70°obtained in Social Science and Mathematicsis more than that in Science and Hindi.(Hint: Just study the central angles).ℙ ℍ ℕℝ ℕ ℙ ℙ |
|
Answer» Step-by-step explanation: i) Total marks obtained =540 540∘ represents 360∘ ∴ The central angle for 105 marks: =540105×360∘ =70∘ Hindi's central angle is 70∘ ∴ Student scored 105 marks in Hindi (ii) Difference between central angles of MATHS and Hindi ⇒90o−70o⇒20o Marks for 20∘ central angles =36020×540∘=30∘ ∴30 more marks were obtained by student in maths than in hindi (III) SUM of central angles of social SCIENCE and maths =65∘+90∘=155∘ Sum of central angles of Science and Hindi =80∘+70∘=150∘ |
|