# Plasticine ball

Plasticine balls have radius r

_{1}=85 cm, r_{2}=60 mm, r_{3}=59 cm, r_{4}=86 cm, r_{5}=20 cm, r_{6}=76 mm, r_{7}=81 mm, r_{8}=25 mm, r_{9}=19 mm, r_{10}=14 cm. For these balls are molded one big ball. Calculate the radius r of the resulting ball.### Correct answer:

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