exam Maths Puzzle Numerical Ability

4x^2 - 8x + 3 = 5

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exam Other Question

Hello! i really need help with surface area of a cylinder, please help me.
the base is 1 cm and the height is 2 cm
what do i do?
THANK YOU SO MUCH! If a bridge that is one mile long is attached to the ground on either side, and you cut it in the middle and add one foot, what is the height of how far the bridge bows up in the middle?