How to Calculate Electric Flux through a Pyramid's Slanted Surfaces?

[shinobi12]

Homework Statement

A pyramid with horizontal square base, 6.00 m on each side, and a hieght of 4.00 m is placed in a vertical electric field of 52.0 N/C. Calculate the total electric flux through the pyramid's four slanted surfaces.

Homework Equations

Phi = E*A*cos(theta)

The Attempt at a Solution

 

[tiny-tim]

A pyramid with horizontal square base, 6.00 m on each side, and a hieght of 4.00 m is placed in a vertical electric field of 52.0 N/C. Calculate the total electric flux through the pyramid's four slanted surfaces.

Hi shinobi12!

Show us what you've tried, and where you're stuck, and then we'll know how to help.

 

[shinobi12]

i found the length of the of the hypotenuse and found the area of the side and I am having trouble figuring out the angle of the area vector and the electric field vector

 

[tiny-tim]

i found the length of the of the hypotenuse and found the area of the side and I am having trouble figuring out the angle of the area vector and the electric field vector

Hint: what is the relationship between the flux through the four slanted surfaces, and the flux through the base?

 

[granpa]

think of flux as flowing water. what is the net flow of water through the walls of the pyramid?