1.A rectangle envelope has a length of 24cm and a diagonal measuring 40cm. Calculate: a) the width of the envelope b) the area of the envelope 2. A swimming pool 50m by 25m. Peter is bored by his usual training routine, and decides to swim the diagonal of the swimming pool. How many diagonal must be swim to complete his normal Distance of 1500m? Give answers to 2 decimal places.

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