90235bac4cb","label":"b","content":"Write down the mathematical name for the straight line shown in the diagram.\n\n![A circle with a diameter line.](https://assets.mathsgenie.co.uk/booklet/7b993212fcb492d62d7ec94cd5ea297040b8fafc60e0d1b018c1baa2d0c252fe.jpg)","markscheme":"- diameter B1","marks":1,"order":1,"markingRubric":{"totalMarks":1,"points":[{"id":"p1","marks":1,"description":"Identifies the line as a diameter.","code":"B"}],"finalAnswers":["diameter"],"generatedAt":"2026-05-06T15:42:53.139Z","modelVersion":"gemini-3-flash-preview"},"tableImages":[],"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null,"walkthroughVideo":null},{"id":"06f47189-e390-4e3b-8f73-178385fc4c92","revisionId":"82683e48-d913-4eda-9a40-b9973affd5b4","questionNumber":"3","questionType":"LA","specification":"","difficulty":2,"difficultyBand":null,"totalMarks":3,"sourceTitle":"Area and Circumference of Circles","calculatorUse":null,"isCalculation":true,"parts":[{"id":"72faa46f-50c9-4b4a-aa88-c66bcfa76244","label":"0","content":"A circle has a radius of 6.5 cm.\nWork out the circumference of the circle.\nGive your answer correct to 2 decimal places.\n\n![Diagram of a circle with radius 6.5 cm.](https://assets.mathsgenie.co.uk/question-image-redraws/sol-max-v1/06f47189-e390-4e3b-8f73-178385fc4c92/image-1-37d00df68814455c2e1ca6b9.svg)","markscheme":"- Applies circumference formula $C = 2\\pi r$ or $C = \\pi d$: $2 \\times \\pi \\times 6.5$ or $13\\pi$ M1\n- Correct calculation: $40.8407...$ A1\n- Final answer correct to 2 decimal places: $40.84$ A1","marks":3,"order":0,"markingRubric":{"totalMarks":3,"points":[{"id":"p1","marks":1,"description":"Uses the correct formula for circumference with $r=6.5$.","code":"M"},{"id":"p2","marks":1,"description":"Obtains a value of $13\\pi$ or approximately $40.8$.","code":"A"},{"id":"p3","marks":1,"description":"Final answer of $40.84$ (cao).","code":"A"}],"finalAnswers":["40.84"],"generatedAt":"2026-05-06T15:42:53.139Z","modelVersion":"gemini-3-flash-preview"},"tableImages":[],"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null,"walkthroughVideo":null},{"id":"9625d54b-2e24-4b52-9657-2ec35148cdbc","revisionId":"eabe91f5-61b2-4c9e-921c-e481bf130e3f","questionNumber":"4","questionType":"LA","specification":"","difficulty":2,"difficultyBand":null,"totalMarks":3,"sourceTitle":"Area and Circumference of Circles","calculatorUse":null,"isCalculation":true,"parts":[{"id":"b90252de-16e4-4f54-9084-0d427ea978de","label":"0","content":"A circle has a diameter of 9 m.\nWork out the area of the circle.\nGive your answer correct to 1 decimal place.\n\n![Diagram of a circle with diameter 9 m.](https://assets.mathsgenie.co.uk/question-image-redraws/sol-max-v1/9625d54b-2e24-4b52-9657-2ec35148cdbc/image-1-26303322a5622c31d90aaf46.svg)","markscheme":"- Finds radius: $9 \\div 2 = 4.5$ M1\n- Applies area formula $A = \\pi r^2$: $\\pi \\times 4.5^2$ M1\n- Final answer correct to 1 decimal place: $63.6$ A1","marks":3,"order":0,"markingRubric":{"totalMarks":3,"points":[{"id":"p1","marks":1,"description":"Identifies the radius as $4.5$.","code":"M"},{"id":"p2","marks":1,"description":"Uses the correct formula for area $\\pi \\times 4.5^2$.","code":"M"},{"id":"p3","marks":1,"description":"Final answer of $63.6$ (cao).","code":"A"}],"finalAnswers":["63.6"],"generatedAt":"2026-05-06T15:42:53.139Z","modelVersion":"gemini-3-flash-preview"},"tableImages":[],"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null,"walkthroughVideo":null}],"subjectCode":"igcse_maths","summaries":[{"id":"d7f87c43-33e9-4d99-a15d-afdc306bec01","difficultyBand":null,"calculatorUse":null,"totalMarks":2},{"id":"7ab916d5-9044-4a4a-8001-652400176fa3","difficultyBand":null,"calculatorUse":null,"totalMarks":2},{"id":"06f47189-e390-4e3b-8f73-178385fc4c92","difficultyBand":null,"calculatorUse":null,"totalMarks":3},{"id":"9625d54b-2e24-4b52-9657-2e

Area and Circumference of Circles

Question 3

Area and Circumference of Circles Questions

Area and Circumference of Circles

Question 3

Area and Circumference of Circles Questions