The pyramid in the drawing is mandatory. Calculate the P area and perimeter L fig. Colored.

[MathDevilll]

Like the above. Acutally I have this, I have no idea how can I do it.

 

[LCKurtz]

Your title says the pyramid is "mandatory". What does that mean? What are you given about the pyramid? Is the base square? Are the slanted edges all [MATH]9[/MATH] units long? Tell us the whole problem.

 

[Cubist]

Hi MathDevilll

can you also tell us what the dot in the angle means?

Perhaps the word "mandatory" is a mis-translation from another language (could it actually be a "regular pyramid")? Can you post the original question text please (even if it is in another language, perhaps someone here can understand it).