5. Draw a rhombus with diagonals 6 cm and 4 cm long. Calculate the length of the
side and the area
6. Find out the length of the circumference if a third of diameter is 5 cm long.
7. A circumference is inscribed in a square whose side is 4cm long? Find out the
length of this circumference
8. Which is the area of a circle with diameter 6cm long?
12 to 13 year-old students. One working session.
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