Surface Area of a Rectangular Based Pyramid
Area=ab+2sqrt(sp1[sp1-a][sp1-lat]²)+2sqrt(sp2[sp2-a][sp2-lat]²)
* lat=sqrt([a²+b²]/4+h²) (lateral edge length)
* sp1=(a+2lat)/2 (semiperimeter of a triangle)
* sp2=(b+2lat)/2 (semiperimeter of b triangle)
Enter values for a, b, and h.
For help with using this calculator, see the object surface area help page.