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01 mc ce maths Q.26.Q27

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01 mc ce maths Q.26.Q27 連解釋!

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26. A 27. D 26. Area of the sector region=sum of 3 sectors ABC-sum of 2 equilateral △ABC =3[1/2(1)^2π/3]-2[1/2(1)^2sinπ/3] =(π/2-√3/2)cm2 27. Let x be the total no. of students Students failed in both tests=x(40%)(70%)=0.28x Percentage of Students failed in both tests=0.28x/x*100%=28%

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