Question 433054
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Hi
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Pyramid.svg/200px-Pyramid.svg.png">

suface area = area of the base (49units^2) + the area of the 4 trianglular faces
 Need the slant height of the each face = {{{sqrt(7^2 + 5^2) }}}
surface area = 49 + 4[(1/2)*10*sqrt(74)] = 49 + 20sqrt(74)