Answer: 60 inches
Explanation:
The general formula for the lateral surface area of a regular pyramid is L.S.A.=1/2pl
where p represents the perimeter of the base and l the slant height.
Find the lateral surface area of a regular pyramid with a triangular base if each edge of the base measures 8 inches and the slant height is 5 inches.
The perimeter of the base is the sum of the sides. p =3(8) = 24 inches
L.S.A.= 1/2( 24) (5 )= 60 inches^2