The volume of a cylinder and a cone is equal, the ratio of their bottom radius is 2:3, the height of the cone is 8 cm, and the height of the cylinder is 8 cm______ Cm

The volume of a cylinder and a cone is equal, the ratio of their bottom radius is 2:3, the height of the cone is 8 cm, and the height of the cylinder is 8 cm______ Cm

Suppose the radius of the cylinder is 2R and the height of the cylinder is h, then the radius of the cone is 3R, π (2R) 2H = 13, π (3R) 2 × 8, & nbsp; π 4r2h = 13, π × 9r2 × 8, & nbsp; & nbsp; & nbsp; & nbsp; 4H = 24, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; H = 6; a: the height of the cylinder is 6cm

The circumference of the bottom surface of a circular bucket is 94.2 cm. How many square centimeters is its bottom area? (π = 3.14)

94.2 △ 3.14 △ 2 = 15 (CM), 3.14 × 152 = 706.5 (square cm); a: the bottom area of this bucket is 706.5 square cm

A cylindrical bucket without cover, with side area of 188.4 square decimeters and bottom circumference of 62.8dm. How many square decimeters does it take to make this bucket and its volume

Bottom radius 62.8 ÷ (2x3.14) = 10dm
Bottom area 10x10x3.14 = 314 square decimeters
Total area 314 + 188.4 = 502.4 square decimeters
Height 188.4 △ 62.8 = 3 decimeters
Volume 314x3 = 942 cubic decimeter
It takes 502.4 square decimeters to make this bucket. The volume of this bucket is 42 cubic decimeters