The triangular pyramid shown is made up of four congruent triangles. The length of the base is 8 inches, and the height of
the base is 6.9 inches.
6.9 in
represents the lateral area. Which
Talia is finding the lateral area of the pyramid. She says that the expression
explains whether Talia is correct and why?
PLEASE HELP
-Talia is correct. The three faces have the same area base, and the area of the base is 1/2(8)(6.9)
-Talia is correct. The lateral area can be found by approximating one large triangle, which can be found using the expression 4( 1/2 (8)6.9) )
-Talia is not correct. Only the base has an area of 1/2(8)(6.9), and three other faces have a different area.
-Talia is not correct. The lateral Area has three faces, so the expression should be 3( 1/2(8)6.9) )