Question
What is the total surface area of a pyramid whose base
is a square with side 8 cm and height of the pyramid is 3 cm?Solution
ATQ, Edge length of square base = 8cm height = 3cm Slant height of triangular faces = √3 2 + 4 2 = 5cm Total surface area = 82 + 4(0.5 × 8 × 5) = 64 + 80 = 144cm2
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