please suggest me the simple way for solving the question of exercise 13.7 of question no.1 of ncert chapter of surface areas and volumes give me the best way for solving the question Find the volume of the right circular cone with (i) radius 6cm, height 7 cm (ii) radius 3.5 cm, height 12 cm (Assume π = 22/7)
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Find the volume of the right circular cone with (i) radius 6cm, height 7 cm (ii) radius 3.5 cm, height 12 cm (Assume π = 22/7) Q.1
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Volume of cone = (1/3) πr2h cube units
Where r be radius and h be the height of the cone
(i) Radius of cone, r = 6 cm
Height of cone, h = 7cm
Say, V be the volume of the cone, we have
V = (1/3)×(22/7)×36×7
= (12×22)
= 264
The volume of the cone is 264 cm3.
(ii) Radius of cone, r = 3.5cm
Height of cone, h = 12cm
Volume of cone = (1/3)×(22/7)×3.52×7 = 154
Hence,
The volume of the cone is 154 cm3.