Respuesta :
Answer:
Area of the base = 15 in.²
Step-by-step explanation:
Volume and height are given, which we can use to find the radius of the base. We can use the formula for the volume of a cone.
[tex]V = \frac{1}{3}\pi r^2h[/tex] Substitute the known variables.
[tex]40 = \frac{1}{3} \pi r^2(8)[/tex] Multiply both sides by [tex]\frac{3}{8}[/tex].
[tex]15 = \pi r^2[/tex] Now we have [tex]\pi r^2[/tex] which is the area of the base.
Area of the base = 15 in.²
Answer:
15 inches
Step-by-step explanation:
The volume of a cone is denoted by: V = [tex]\frac{1}{3} \pi r^2h[/tex], where r is the radius and h is the height. Here, we already know that V = 40 and that h = 8, so plug these in to find πr², which is the area of the base:
V = [tex]\frac{1}{3} \pi r^2h[/tex]
40 = [tex]\frac{1}{3} \pi r^2*8[/tex]
πr² = 15
The area of the base of the cone is 15 inches.