Find the surface area of the cylinder 1. The radius of the bottom is 5 decimeters, and the height is 4 decimeters 2. The perimeter of the bottom is 12.56 meters, and the height is 3 meters

Find the surface area of the cylinder 1. The radius of the bottom is 5 decimeters, and the height is 4 decimeters 2. The perimeter of the bottom is 12.56 meters, and the height is 3 meters

one
5x5x3.14x2 = 157 square decimeters
5x2x3.14 = 31.4 decimeters
31.4x4 = 125.6m2
157 + 125.6 = 282.6 square decimeters
two
12.56x3 = 37.68m2
12.56/3.14/2 = 2m
2x2x3.14x2 = 25.12 M2
37.68 + 25.12 = 62.8 square meters

Find the surface area of the following cylinder: 1. Height 8 decimeters 2. Radius 4 cm 3. Perimeter = 37.68 cm

3.14×5×8=125.6 CM²
3.14×2×2×12=150.72 CM²
37.68×10=376.8 CM²

Find the surface area and volume of the cylinder below: 1. The radius is 3 decimeters, the height is 6 decimeters; 2. The diameter is 4 decimeters, the height is 8 decimeters; 3. The circumference of the bottom surface is 12.56 cm, and the height is 5 cm

1. Volume 3x3.14x6 = 169.56 cubic decimeter
Surface area 3x3x3.14x2 + 3x2x3.14x6
＝56.52+113.04
= 169.56 square decimeters
2. The bottom radius is 4 / 2 = 2
Volume 2x2x3.14x8 = 100.48 cubic decimeter
Surface area 2x2x3.14x2 + 4x3.14x8
＝25.12+100.48
= 125.6 square decimeters
3. Bottom diameter 12.56 △ 3.14 = 4 radius 4 / 2 = 2
Volume 2x2x3.14x5 = 62.8 cm3
Surface area 2x2x3.14x2 + 4x3.14x5
＝25.12+62.8
= 87.92 square centimeter