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what is the total surface area of asphere whose radius is 13 cm​

Sagot :

[tex]\underline{\mathcal{QUESTION}}:[/tex]

what is the total surface area of asphere whose radius is 13 cm

[tex]\underline{\mathcal{SOLUTION}}:[/tex]

  • formula : SA = 4πr²

[tex]\begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered}\:\:\:\:\:\begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered}\boxed{\begin{array}{l}\sf SA = 4\pi r^2 \\ \\ \sf SA = 4(3.14)(13)^2 \\ \\ \sf SA = 676(3.14) \\ \\ \boxed{\sf SA = 2122.64}\end{array}}\end{gathered} \end{gathered}\end{gathered}\end{gathered}\end{gathered}\end{gathered}\end{gathered}\end{gathered}\end{gathered}[/tex]

[tex]\underline{\mathcal{ANSWER}}:[/tex]

  • Therefore the total surface area of sphere is 2122.64

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