Respuesta :

calculista
we know that

[volume of the cone]=[area of the base]*h/3
h=3*[volume of the cone]/[area of the base]

[area of the base]=pi*r²-----> pi*3²----> 9pi m²
volume of the cone=12pi m³

h=3*[12pi]/[9pi]----> 4 m

the answer is
4 m

Answer: the answer is A. 4m

and number 5 is D. 15

Step-by-step explanation: