The Pentagon

By, Aloha Suto

About The Pentagon

The pentagon is located in Arlington County in Virginia. The Pentagon is the headquarters of the United States Department of Defense.

The Dimensions

77 feet tall

924 feet long

Base

a( apothem)=tan54(924/2)

a=tan54=1.38

a=1.38•463= 639

B= 5/2 l(length) a(apothem)

B= 5/2 (924) (639)

B= 1,476,090

Lateral Area

L.A( lateral Area)= p (perimeter)• h (height)

L.A= (924•5)• 77

L.A= 4,620• 77

L.A= 355,740

The Surface Area

S.A. (Surface Area)= L.A+ 2• b

S.A= 355,740+(2• 1,476,090)

S.A= 355,740+ 2,952,180

S.A= 3,307,920 square feet

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