Question

kamryn has a pyramid pictured below. the slant height of this square - based pyramid is 5 inches and the base is 10 inches on each side. what is the surface area of the pyramid?
options:
260 square inches
128 square inches
80 square inches
435 square inches

Explanation:

Step1: Identify pyramid type and dimensions

Square base (10in side), slant height (8in). Lateral surface area = 2×base×slant height.

Step2: Calculate lateral surface area

$2×10×8 = 160$? No, wait: 4 triangular faces, each area $\frac{1}{2}×10×8 = 40$. Total lateral area: $4×40 = 160$? Wait, no—wait the question might be total surface area? Base area is $10×10=100$. Total surface area: $160+100=260$.

Answer:

A. 260 square inches