I want to know the best answer of the question from Surface areas and Volumes chapter of class 9th ncert math. The question from exercise 13.7 of math. Give me the easy way for solving this question of 3 The height of a cone is 15cm. If its volume is 1570cm3, find the diameter of its base. (Use π = 3.14)
AnilSinghBoraGuru
The height of a cone is 15cm. If its volume is 1570cm3, find the diameter of its base. (Use π = 3.14) Q.3
Share
Height of the cone, h = 15 cm
Volume of cone =1570 cm3
Let r be the radius of the cone
As we know: Volume of cone, V = (1/3) πr2h
So, (1/3) πr2h = 1570
(1/3)×3.14×r2 ×15 = 1570
r2 = 100
r = 10
Radius of the base of cone 10 cm.