A square pyramid has a base perimeter $x$, and the slant height is half of the perimeter. What is the lateral surface area of the pyramid?
(A) $x^{2}$
(B) $0.75 x^{2}$
(C) $0.50 x^{2}$
(D) $0.25 x^{2}$
A square pyramid has a base perimeter $x$, and the slant height is half of the perimeter. What is the lateral surface area of the pyramid?
(A) $x^{2}$
(B) $0.75 x^{2}$
(C) $0.50 x^{2}$
(D) $0.25 x^{2}$