A pyramid unfolds to form 4 triangles and a square. The height of each triangle is given as 3 meters and the base length of the triangle is 4 meters. What is the area of this shape?
A
16 sq m
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B
24 sq m
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C
40 sq m
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D
32 sq m
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Solution
The correct option is C40 sq m Let’s draw the unfolded pyramid.
The area of the shape =4× area of each triangle + area of the square
Area of each triangle =12×3×4=6 sq m
Area of the square is =4×4=16 sq m
Hence, area of closed figure =4×6+16=24+16=40 sq m