Passage: The adjoining figure is showing '3' stairs if L = 85 cm, B = 45 cm and H = 30 cm. Based on this information choose the correct option for the question.

The perimeter of bottom is

340 cm 330 cm 320 cm 440 cm

440 cm

Here we can see that in the bottom we have two lengths and six breadths. Therefore, Perimeter of bottom = 2L + (3×2)B = (2 × 85) + (6 × 45) = 170 + 270 = 440