maddyreynaud04osyhif maddyreynaud04osyhif

12-07-2017
Mathematics

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

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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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