Q303 · Practice questionTechnology-freeSimple familiar3 marks
QUESTION 303 (3 marks)
A circular window has radius cm. A chord subtends an angle of radians at its centre. The smaller segment is shaded.
a)[1 mark]
Determine the exact area of the sector bounded by the two radii and the minor arc.
b)[2 marks]
Determine the exact shaded area.
WORKED SOLUTION
3 marksPractice marking scheme
ANSWER
a) . b) .
Worked solution
a) Sector area is .
b) The triangle has area . Subtract it from the sector.
Exact answers unless rounding is specified; equivalent forms accepted.
a) Determines the sector area.
b) Determines the triangle area.
b) Subtracts to give the exact segment area.
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
View the QCAA syllabusHow many marks did you earn?
Compare your working with the guide above.