The side area of the cylinder is 188.4 square centimeters, the bottom radius is 5 centimeters, and what is the volume of the cylinder in cubic centimeters?

The side area of the cylinder is 188.4 square centimeters, the bottom radius is 5 centimeters, and what is the volume of the cylinder in cubic centimeters?

Luo XunXin,
Height: 188.4 ÷ (2 × 3.14 × 5) = 6 (CM)
Volume: 3.14 × 5 & # 178; × 6 = 471 (cm3)

What is the volume of a cylinder with a side area of 100 square centimeters and a radius of 40 centimeters?

Bottom perimeter = 3.14x40x2 = 251.2cm
Height = 100 △ 251.2
Bottom area = 3.14x40 & # 178; = 5024cm2
Volume = 5024x100 △ 251.2 = 2000 CC

Use a 20 cm square sheet iron to form a cylinder. What is the side area of the cylinder

Form a cylinder
Its side area is the iron sheet area (because there is no bottom)
S=20*20=400cm^2

Use a square sheet of iron with a side length of 25.12 cm to form a cylinder. The volume of the cylinder is about ()

Use a square sheet of iron with a side length of 25.12 cm to form a cylinder. The volume of the cylinder is about (1262 cubic cm)
Bottom radius 25.12 ÷ (2x3.14) = 4cm
Volume 4x4x3.14x25.12 ≈ 1262 cubic centimeter
If other problems are added,