[tex]\bold{h^{2} +r^{2} =g^{2} }\\\\\bold{(12cm)^{2} +r^{2} =(15cm)^{2} }\\\\\bold{r^{2} =81cm^{2} }\\\\\bold{r=9cm}[/tex]
r : radio
[tex]\boxed{\bold{V=\frac{\pi.r^{2} .h}{3} }}\\\\\\\bold{V=\dfrac{\pi.(9)^{2} .(12)}{3} }\\\\\\\bold{V=81 .4.\pi}\\\\\bold{V=324\pi }[/tex]
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Por Pitágoras:
[tex]\bold{h^{2} +r^{2} =g^{2} }\\\\\bold{(12cm)^{2} +r^{2} =(15cm)^{2} }\\\\\bold{r^{2} =81cm^{2} }\\\\\bold{r=9cm}[/tex]
r : radio
Volumen de un cono:
[tex]\boxed{\bold{V=\frac{\pi.r^{2} .h}{3} }}\\\\\\\bold{V=\dfrac{\pi.(9)^{2} .(12)}{3} }\\\\\\\bold{V=81 .4.\pi}\\\\\bold{V=324\pi }[/tex]
a. 324πcm³