Find the volume of a cone having base radius 3.5 cm and height 18 cm.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 231 cm3.
Volume of a cone = (1/3)πr2h
Where r is the radius of the base and h is the height of the cone
Radius of the cone (r) = 3.5 cm
Height of the cone (h) = 18 cm
Volume = (1/3)πr2h = (1/3) × (22/7) × (3.5)2 × 18
= (1/3) × (22/7) × 12.25 × 18
= 231 cm3
Therefore, the volume of the cone is 231 cm3.