When 154 lof oil is removed from an upright cylindrical tank, the level falls down by 10 cm. What is the diameter (in cm) of the tank? Take π = 22/7

Explanation

​ = 17500 700 ​ = 25 Given: Volume = 154 liters = 154000 cm 3 The level falls down by 10 cm Height, h = 10cm Formula used: The volume of a cylinder = π r 2h Diameter, d = 2r Calculation: The volume of a cylinder = π r 2 h 22 7 ⇒ 154000 = ​ × r 2 × 10 ⇒r2= 154000×7 = 4900 22×10 ⇒r= 4900 = 70 cm ​ ​ Diameter = 2r = 2 × 70 = 140 cm ∴ T he diameter of the tank is 140 cm.