A right triangle with sides 3 cm, 4 cm, 5 cm is rotated the side of 3 cm to form a cone. The volume of the cone so formed is:
a. 12pi cm^3 b. 15pi cm^3 c. 16pi cm^3 d. 20pi cm^3
Answer :
clearly we have r = 3 h = 4
volume = 1/3 (pi r^2 h)
= 1/3 x pi x 3^2 x 4
= 12pi cm^3
a. 12pi cm^3 b. 15pi cm^3 c. 16pi cm^3 d. 20pi cm^3
Answer :
clearly we have r = 3 h = 4
volume = 1/3 (pi r^2 h)
= 1/3 x pi x 3^2 x 4
= 12pi cm^3
No comments:
Post a Comment