exam Maths Puzzle Numerical Ability

Can you please help me? The problem is the square root of X squared to the third power equals 9. Can you show me how to work this out step by step?

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exam Other Question

PQR is an isosceles triangle such that QP=QR=13cm and the altitude PS=12cm . Find the length of PR ? (ANS- 14.4) Solve.

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