Surface Area of a Pyramid
Square base · LSA = 2al · TSA = a² + 2al
Name a, l, h and e on a pyramid
Derive 2al from the net
Find the total surface area
Find a missing length with Pythagoras
a: side of the base
l: slant height, along a face
h: vertical height, to the centre
e: edge, to a corner
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