Q3 of 75 Page 233

The height of a cone is 15 cm. If its volume is 1570 cm3, find the radius of the base. (Use π = 3.14)

Height (h) of cone = 15 cm

Let the radius be r


Volume of cone = 1570 cm3


r2h = 1570


* 3.14 * r * r * 15 = 1570


r2 = 100


r = 10 cm


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