【单选题】
侧棱长为10,高为6的正三棱锥的底面积是( )
①
<img class="kfformula" src="20190809/1565327194325168.png" data-latex="60"/>
②
<img class="kfformula" src="20190809/1565327194151271.png" data-latex="48\sqrt {3}"/>
③
<img class="kfformula" src="20190809/1565327194214174.png" data-latex="24"/>
④
<img class="kfformula" src="20190809/1565327194795377.png" data-latex="30"/>
【单选题】
侧棱长为10,高为6的正三棱锥的底面积是( )
①
img class=kfformula src=zzximg/20190809/1565327194795377.png data-latex=30/
②
img class=kfformula src=zzximg/20190809/1565327194214174.png data-latex=24/
③
img class=kfformula src=zzximg/20190809/1565327194325168.png data-latex=60/
④
img class=kfformula src=zzximg/20190809/1565327194151271.png data-latex=48\sqrt {3}/