exam Maths Puzzle Numerical Ability

Can you please help me solve my problem?

{8*2-(3+9)]+[8-2*3]

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exam Other Question

Find the surface area of a cylinder if the height is 9 meters and the radius of a base is 6 meters. Use pie( no way to type sign) equals 3.14 and round to the nearest whole number. 1/(x-4) - 5/(x+2)=6/(x^2-2x-8)