What is the lateral area of the pyramid shown below?

If it is a right pyramid (not given), then each lateral face is an isosceles triangle with side lengths 26ft, 26 ft, and 20 ft.

altitude to the base = √(26² - 10²) = 24 ft

area of each triangle = (20)(24)/2 = 240 ft²

lateral area = 4(240) = 960 ft²

If it is not a right pyramid, then we have nothing.

Lateral surface area is finding the area of the sides of a three-dimensional geometric figure. The formulas for lateral surface area are based on the base of the figure and whether the figure is a prism, cone, or pyramid.

we have 4 equilateral triangles, so area is
A = 4(s²√3)/4) = s²√3 = 26²√3 = 676√3 or about 1171 ft²



equalaterial triangle
A = (s²√3)/4)