If the height of a cylinder is shortened by 3cm, the surface area will be reduced by 94.2cm, the radius of its bottom will be reduced, and the volume will be reduced

Bottom circumference = 94.2 △ 3 = 31.4cm
Bottom radius = 31.4 △ 3.14 △ 2 = 5cm
Bottom area = 3.14 × 5 & # 178; = 78.5 square centimeter
Volume reduction = 78.5 × 3 = 235.5 cm3
A: its bottom radius is 5cm. Its volume is reduced by 235.5cm

A cylinder has a side area of 50.24 square centimeters and a height of 4 centimeters. What is its surface area and volume
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If the side area is 50.24 square cm and the height is 4 cm, the perimeter of the bottom surface is 50.24 / 4 = 12.56 cm
The bottom radius is 12.56 / (2 * 3.14) = 2 cm
The surface area of the cylinder is 2 * 3.14 * 2 ^ 2 + 50.24 = 75.36 square centimeter
The volume of the cylinder is 3.14 * 2 ^ 2 * 4 = 50.24 cubic centimeter

When the height of a 8cm cylinder is reduced by 2cm, the surface area is reduced by 50.24cm, and the volume of the original cylinder is ()

The circumference of the bottom surface of the cylinder is 50.24 △ 2 = 25.12 cm
Radius = 25.12 ／ 2 ／ 3.14 = 4cm
Original volume = 3.14 × 4 & # 178; × 8 = 401.92 cm3
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If the height of a cylinder is shortened by 4cm, its surface area will be reduced by 50.24cm2 and its volume will be reduced______ Cubic centimeter

The radius of the bottom surface is: 50.24 △ 4 △ 3.14 △ 2 = 2 (CM), so the reduced volume is: 3.14 × 22 × 4 = 50.24 (cm3). A: the volume is reduced by 50.24 cm3. So the answer is: 50.24

If the height of a cylinder is shortened by 3cm, the surface area will be reduced by 94.2cm, the radius of its bottom will be reduced, and the volume will be reduced