What is the surface area of a regular square pyramid with a slant height of 12 cm and a lateral edge of 13 cm?

A) 100 cm squared

B) 240 cm squared

C) 340 cm squared

D) 640 cm squared

Each side will be a triangle with a height of 12 and a base edge of 10

So,,,,,the sides will be 4 triangles with an area of 4*(1/2)(12)(10) = 240cm^2

And the base area is 10^2 = 100cm^2

So...the total surface area is 240 + 100 = 340 cm^2

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