exam Maths Puzzle Numerical Ability

The sides of a triangle are 35 cm, 45 cm and 40 cm in length. Find the area of the triangle. (Hint: Use the Pythagorean theorem)

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exam Other Question
the sum of two consecutive integers is 145. what are the two integers? Use quadratic formula to solve 4x^2-8x+1=0.......

I answered (8+-4sqrt3)/8 on a quiz and got it wrong.

Thanks.