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The formula for the Lateral Area of Square-based Pyramid
L.A = [tex] \frac{1}{2} [/tex] (Perimeter of the base) x Apothem
Given:
Apothem = 10 in
Side length = 5 in
Perimeter of Square = 4 x side = 4 x 5 = 20 in
L.A = [tex] \frac{1}{2} [/tex] (20)(10)
= [tex] \frac{1}{2} [/tex] (200)
= 100 in²
