Given:
Length( ) = 12 cm
Breadth = 25% of length that is 3 cm
Height = 50% of length that is 6 cm
Formula used:
Total Surface Area = 2(lb + bh + hl)
Solution:
Applying the formula:
Total Surface Area = 2(12×3 + 3×6 + 6×12)
Total Surface Area = 2(36 + 18 + 72)
Total Surface Area = 2(126)
Total Surface Area = 252
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