contestada

NEED HELP PLEASE! WILL GIVE MEDAL:
Prism M and pyramid N have the same base area and the same height. Cylinder P and prism Q have the same height and the same base perimeter. cone Z has the same base area as cylinder Y, but it's height is three times the height of cylinder Y. Which two figures have the same volume?
Choices:
1) Prism M
Cylinder p
Cone Z
And
2)Pyramid N
Prism Q
Cylinder Y

Respuesta :

I have come to the conclusion that the answer would not be Cylinder Y nor Pyramid N bb.

Answer : Cone Z   and Cylinder Y

Prism M and pyramid N have the same base area and the same height.

Volume of prism = base area * height

Volume of pyramid = [tex] \frac{1}{3}[/tex] * base area * height

cone Z has the same base area as cylinder Y, but it's height is three times the height of cylinder Y


So volume of prism and pyramid cannot be same.

Cylinder P and prism Q have the same height and the same base perimeter.

Volume of cylinder =base area * height= [tex] \pi r^2h [/tex]

Volume of prism = base area * height

The base area is not same as base perimeter so the volume of cylinder and prism cannot be same.

cone Z has the same base area as cylinder Y, but it's height is three times the height of cylinder Y

Volume of cylinder = base area * height = [tex] \pi r^2 * h [/tex]

Volume of cone = [tex] \frac{1}{3}[/tex] * base area * height = [tex] \frac{1}{3}*\pi r^2[/tex] * height

Given height of cone is three times the height of cylinder Y

So volume of cone becomes =  [tex] \frac{1}{3}*\pi r^2[/tex] *3* h= [tex]\pi r^2[/tex] * h

Hence Volume of cone Z = Volume of cylinder Y