maddyreynaud04osyhif maddyreynaud04osyhif
  • 12-07-2017
  • Mathematics
contestada

What is the total surface area of the cone with a height of 12 and radius of 5

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amirahabdulla
amirahabdulla amirahabdulla
  • 12-07-2017
Using the formulasA=πrl+πr2l=r2+h2Solving forAA=πr(r+h2+r2)=π·5·(5+122+52)≈282.74334
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shelia908 shelia908
  • 12-07-2017
H =12
R=5
l*l=h*h+r*r
l*l=12*12+5*5
l*l=144+25
l=square root of (169)
l=13

SA=3.14*5*(5+13) = 282.6
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