QCEVault

Further applications of differentiation — Question 38

Original QCE Vault practice · 5 marks

Q38 · Practice questionTechnology-activeComplex familiar5 marks

QUESTION 38 (5 marks)

A 30 cm by 20 cm rectangular sheet has squares of side xx cm cut from each corner. The sides are folded up to form an open box. Determine the value of xx that maximises the volume and state the maximum volume to the nearest cubic centimetre.
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