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how can we find the total surface area of a cone? explain in brief.​

Sagot :

Let's find

[tex]\\ \rm\rightarrowtail TSA=LSA+Area\:of\:base[/tex]

  • Base is a circle
  • LSA=πrl

[tex]\\ \rm\rightarrowtail TSA=\pi rl+\pi r^2[/tex]

[tex]\\ \rm\rightarrowtail TSA=\pi r(l+r)[/tex]

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