If a cuboidal box has height, length and width as 20 cm, 15 cm and 10 cm respectively. Then its total surface area is:
A1100 cm²
B1200 cm²
C1300 cm²
D1500 cm²
A1100 cm²
B1200 cm²
C1300 cm²
D1500 cm²
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The area of an equilateral triangle is . The length (in m) of the median is