OpenStudy (anonymous):

A city park has an architectural pillar in the shape of a triangular pyramid. The shape of the base of the pillar is an equilateral triangle. The dimensions of the shape of the pillar are as shown below. The park plans to repaint the lateral area of the pillar. The area of the pillar that will be repainted is _______________ ft2.

6 years ago
OpenStudy (anonymous):
6 years ago

OpenStudy (anonymous):

18?

6 years ago
OpenStudy (ghazi):

no...use area= 1/2*base*height

6 years ago
OpenStudy (anonymous):

20?

6 years ago
OpenStudy (ghazi):

nope...it's 2*(1/2* 2*11)= 22

6 years ago
OpenStudy (ghazi):

did you get this?

6 years ago
OpenStudy (anonymous):

nope. where did the other 2 come from?

6 years ago
OpenStudy (anonymous):

i just did (1/2* 2*11)= 20

6 years ago
OpenStudy (ghazi):

well 1/2*base *height counts for only half of the area...so you have to multiply it by 2 ..to get the total area of one face

6 years ago
OpenStudy (anonymous):

omgeee.. thank u. because i forgot all about that. && sorry its so many questions. im correcting my final exam && missed over half of them. && thank u much for your help

6 years ago
OpenStudy (ghazi):

it's okay :)

6 years ago
OpenStudy (anonymous):

:) you're awesome!

6 years ago