Correct Answer - Option 1 : 38.5
Given:
Radius of a cylinder = 1.4 m
Height of a cylinder = 5m
The earth raise platform = 10 × 8 × h
Concept Used:
Volume of cylinder = πr2h where r is the radius of the base and h is the height of the cylinder
Volume of cuboid = Length × Breadth × Height
Calculations:
Volume of a cylinder = volume of cuboid
⇒ (22/7) × 1.4 × 1.4 × 5 = 10 × 8 × h
⇒ (22/7) × 1.4× 0.7 = 8 × h
⇒ h = (22/7) × 1.4 × 0.7/8
⇒ h = 0.385 m
⇒ h = 38.5 cm
∴ The height of the platform is 38.5 cm
1m = 100 cm