Plasticine ball

Plasticine balls each have a radius of r₁=77 cm, r₂=98 mm, r₃=9 cm, r₄=81 cm, r₅=5 cm, r₆=74 mm, r₇=49 mm, r₈=43 mm, r₉=26 mm, r₁₀=2 cm. They are moulded into one large ball. Calculate the radius R of the resulting ball.

Final Answer:

R =  99.7 cm

Step-by-step explanation:

$$\begin{gathered} R=\sqrt[ \\ 3]{77^3+9.8^3+9^3+81^3+5^3+7.4^3+4.9^3+4.3^3+2.6^3+2^3}=99.7\text{cm} \end{gathered}$$

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