Q293 · Practice questionTechnology-activeSimple familiar4 marks
QUESTION 293 (4 marks)
A mural has a curved upper edge above a horizontal baseline. Its measured heights metres at distances metres are shown: .
a)[2 marks]
Use four equal trapezoidal strips to estimate the mural area.
b)[2 marks]
Paint covers per litre. Allowing extra paint, determine the number of -litre tins required.
WORKED SOLUTION
4 marksPractice marking scheme
ANSWER
a) . b) tins.
Worked solution
a) .
b) Paint required is litres. Round up to whole tins.
Exact answers unless rounding is specified; equivalent forms accepted.
a) Applies the trapezoidal weights.
a) Gives the area estimate.
b) Includes the extra allowance and coverage.
b) Rounds up to three tins.
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
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