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?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 144 cm2
Formula used
The total surface area of the pyramid whose base is a square = ½ * perimeter of base * slant height + Area of the base
The slant height of the pyramid = √(42 + 32) = 5 cm
Calculation
The total surface area of the pyramid = ½ * 8 * 4 * 5 + 64 = 80 + 64 = 144 cm2