The circumference of the bottom surface of a cone is 12.56 cm and the height is 9 cm. The volume of this cone is______ Cubic centimeter

The circumference of the bottom surface of a cone is 12.56 cm and the height is 9 cm. The volume of this cone is______ Cubic centimeter

The volume of this cone is 37.68 cubic centimeter. So the answer is: 37.68 cubic centimeter

(1) The base circumference of a cone is 12.56 cm and its height is 2.5 cm
(2) A cylindrical glass with a bottom diameter of 20 cm is filled with water. There is a conical plumb with a bottom diameter of 6 cm and a height of 10 cm in the water. When the plumb is taken out, how many cm will the water surface in the glass drop?

1. The bottom radius is 12.56 △ 3.14 △ 2 = 2 cm, and the volume is 2 × 2 × 3.14 × 2.5 × 1 / 3 = 10.47 cm3 2. Because the volume of conical plumb is v = 1 / 3 × π (6 / 2) ^ 2 × 10 = 30 π, the volume of small cylinder is x (20 △ 2) 2 × x = 100 π x (cm3

The volume of a cone is 12.56 cubic meters and its height is 3 meters. What is the perimeter of its bottom?

Bottom area = 12.56 × 3 △ 3 = 12.56 square meters
Bottom radius & sup2; = 12.56 △ 3.14 = 4, so radius = 2m
Bottom perimeter = 3.14 × 2 × 2 = 12.56m