to its edge.","back":"Radius","points":1},{"id":"14a69fbd-ddfd-4411-bed6-26093457207f","cardType":"basic","front":"Name the straight line that passes through the centre from edge to edge.","back":"Diameter","points":1},{"id":"148fbbb5-3e7c-486b-bdcf-e69ee3d7d0b8","cardType":"basic","front":"What is the name for a straight line that touches a circle at exactly one point?","back":"Tangent","points":1},{"id":"f9114229-8dde-4275-9f0a-291f929c1a00","cardType":"basic","front":"Name the part of a circle formed by two radii and an arc.","back":"Sector","points":1},{"id":"48515b34-fa12-4f0b-bff1-d5f3432d118a","cardType":"cloze","front":"The diameter is twice the length of the [ ] ($d = 2r$).","back":"The diameter is twice the length of the radius ($d = 2r$).","points":null},{"id":"f232d32f-1a6e-4d48-aeb6-6f23043f7f53","cardType":"cloze","front":"The [ ] is the total distance all the way around the edge of a circle.","back":"The circumference is the total distance all the way around the edge of a circle.","points":null},{"id":"49717f1e-0648-4c68-8b05-be2efaa2d34f","cardType":"basic","front":"State the formula for circumference using the diameter ($d$).","back":"$$C = \\pi d$","points":1},{"id":"8f8f79a9-4e48-4890-b427-61d700bdc584","cardType":"basic","front":"State the formula for circumference using the radius ($r$).","back":"$$C = 2\\pi r$","points":1},{"id":"319a27db-0c38-4336-a271-7ea1b4bcab3b","cardType":"cloze","front":"For decimal answers, use the [ ] on your calculator unless instructed otherwise.","back":"For decimal answers, use the $\\pi$ button on your calculator unless instructed otherwise.","points":null},{"id":"20d3bdf2-3f73-45e6-9d92-cd3b43e51105","cardType":"basic","front":"State the formula for the area of a circle.","back":"$$A = \\pi r^2$","points":1},{"id":"19d2c9e9-1221-4f49-a036-021a01087a06","cardType":"basic","front":"What must be done to the diameter before it can be used in the area formula $A = \\pi r^2$?","back":"Halve it to find the radius ($r = \\frac{d}{2}$).","points":1},{"id":"c01023c3-e9f6-414f-8816-b87ddb392b4b","cardType":"basic","front":"Find the circumference of a circle with diameter 16 mm in terms of $\\pi$.","back":"$$16\\pi$ mm","points":1},{"id":"9dfe9a6b-6de5-477c-b968-d323e70d6775","cardType":"basic","front":"Find the area of a circle with radius 9 cm in terms of $\\pi$.","back":"$$81\\pi$ $cm^2$","points":2},{"id":"eca8c7fb-0488-478d-9f84-dbf9f238ec22","cardType":"basic","front":"Identify the two components needed to calculate the total perimeter of a semi-circle.","back":"

Half the circumference (the arc)
The diameter (straight edge)

","points":2},{"id":"2ed6a02a-1e1d-44c5-8ba2-3c2d64b3fabe","cardType":"cloze","front":"A [ ] is exactly one half of a circle.","back":"A semi-circle is exactly one half of a circle.","points":null},{"id":"16d4880a-be1f-465c-9d32-8b39bdbef8f9","cardType":"cloze","front":"An [ ] is defined as a part of the circle's circumference.","back":"An arc is defined as a part of the circle's circumference.","points":null},{"id":"8c629908-c14e-4098-94bc-52050cbeb847","cardType":"basic","front":"Explain the strategy for finding the shaded area

Area and Circumference of Circles Flashcards

Area and Circumference of Circles Flashcards

Area and Circumference of Circles Flashcards

Area and Circumference of Circles Flashcards