A hemispherical bowl is made of thick steel having thickness 0.5 cm. If the external diameter of the bowl is 43 cm, then the capacity of the bowl is: (Use π =)
Show answer & explanation
Correct answer: A
Explanation
The Correct answer is Option 1 i.e.19404.
External diameter = 43 cm
Radius = diameter/2 = 43 cm/2 = 21.5 cm
Internal radius = external radius - thickness = 21.5 cm - 0.5 cm = 21 cm
Volume of hemisphere = 2/3πr3
⇒ 2/3 × 22/7 × 213
⇒ 2/3 × 22/7 × 9261 = 19404