Answer:
r=1.27m
Step-by-step explanation:
volume of sphere = 8.6 cubic metre
[tex]4 \div 3\pi \: r ^{3} = 8.6[/tex]
[tex]4 \div 3 \times 3.14 \times r ^{3} = 8.6[/tex]
[tex] {r}^{3} = 8.6 \times 3 \div 12.56[/tex]
[tex] {r}^{3} = 25.8 \div 12.56[/tex]
[tex]r \: = \sqrt[3]{2.054} [/tex]
[tex]r \: = 1.27m[/tex]
