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Further applications of differentiation — Question 73

Original QCE Vault practice · 1 mark

Q73 · Practice questionTechnology-freeComplex familiar1 mark

QUESTION 73

A rectangular enclosure beside a straight river requires fencing on only three sides, as shown. If 200200 m of fencing is available, the width xx that maximises the enclosed area is
Diagram for question 73
(A)
50 m50\text{ m}
(B)
66.7 m66.7\text{ m}
(C)
75 m75\text{ m}
(D)
100 m100\text{ m}
Question linkSyllabus coverage

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