The Great Pyramids of Khufu is located in El Giza, Egypt. Pyramids were built to serve as tombs for the pharaohs of ancient Egypt. The Great Pyramid is 481 feet high and has a square base with a base edge length of 756 feet. What is the approximate surface area (to the nearest hundredth) of the pyramid.

(HINT: Is the base on the surface?)

**Square** **with** **edge** **length** = 756 feet

Square= 1/2 × 297.45 × 481

= 286,146.9ft

= 1,037,709,9ft. base with edge length =756 feet

**area** **of** **square**,

= Side² = 756 × 756 = 571,563ft²

⇒ area of base = 1/2 = 756/2 = 378ft

**By** **pythagorean** **theorem**,

H² = P²+B²

(481)² = P²+(378)²

P² = (481)²-(378)²

P² = 231,361-142,884

P² = 88,477

P = √88,477

P = 297.45

**Area** **of** **triangle** =1/2 × b × h

= 1/2x297.45*481

= 148.725×481

= 71,536.725

**Now** **area** **of ****4** **triangles** = 4×71,536.725

= 286,146.9ft

**total** **surface** **area** **of** **pyramid** + **square**

= 751,563+286,146.

= 1,037,709,9ft.