Cleave Books
Answers to Puzzle Trio 25

73.A Red triangle is the last one in the set.
They are the 4 symbols used on English banknotes,
designed to help people with poor sight.
74.34 years (= 30 + 4)
75.(a)   75π/4 or 58.9 square metres
(b)  781π/4 or 613.4 square metres.

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