An external measurement of a cistern is 3.3 m in length, 2.6 m in width, and 1.1 m in height, with wall thickness of 5 cm. If the cistern holds 8000 litres, what is the thickness of its base?
Explanation
Given the external dimensions and wall thickness, the base thickness is calculated to be 10 cm (1 decimeter), corresponding to option B.