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(D) What is the surface area of this rectangular pyramid?
4 yd
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444
3 yd
4 yd
square yards
3 1.8
9

Type here to search (D) What is the surface area of this rectangular pyramid? 4 yd-example-1
User DEH
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Check the picture below.

so if we cut the pyramid like a pie with a knife from the top and open it up, it'd look more or less like that picture, so its area is just the area of four triangles with a base of 4 and a height of 3 and a 4x4 square.


\stackrel{ \textit{\LARGE Areas} }{\stackrel{\textit{four triangles}}{4\left[ \cfrac{1}{2}(4)(3) \right]}~~ + ~~\stackrel{square}{(4)(4)}}\implies 24+16\implies \text{\LARGE 40}~yd^2

Type here to search (D) What is the surface area of this rectangular pyramid? 4 yd-example-1
User Dario Rodriguez
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