A cylinder with a diameter of 10 centimeters and a height of 20 centimeters, find out what its surfa

, S circle = faction R square = 25 faction, 2S circle = 50 faction, C circle = faction D = 10 faction (cm), S side = length * height = 10 faction * 20 = 200 faction: the surface area of the cylinder = 50 faction + 200 faction = 250 faction (square centimeter) 2The diameter of the circle d=c circle pie = pie (cm), then the area of the cutting surface = d * h = pie * 5 = pie (square centimeter) glass sink bottom surface = 12 2 = 6 (cm), s glass sink bottom surface = pie r square = 36 pie, v metal cylinder = s glass sink bottom surface * water surface height = 54 pie (square centimeter), s metal body bottom surface = v metal cylinder h metal cylinder = 54 pie 4 = pie (square centimeter).

2 (10 2) (10 2) A cylinder with a diameter of 10 centimeters and a height of 20 centimeters, find its surface area of 785 square centimeters The area of the cutting surface is 15 square centimeters (12 2) (12 2) The base area of the metal body is square centimeters.

Cylindrical cylinder side area = bottom perimeter height (bottom perimeter know, round Kai stall hall stupid jujube circumference (staring 2 r) or (d)) surface area of the cylinder = 2 base area + 1 side area (bottom area know, circle area (r r) or (d 2) (d 2) (don't forget to 2, because there are 2 base areas.)

Summary. A cylinder with a diameter of 20 cm has a cylinder with a diameter of 6 cm and a height of 20 cm, and the surface area is found. Good.

Volume. The base area is high.

3140 (cubic centimeters).

If the circumference of the base surface is centimeters, the side area is centimeters squared.

One base area is a square centimeter, so the surface area is the side area plus two base areas: ten 314x2 = square centimeters.

With a diameter of 20 centimeters, the radius is equal to ten centimeters, and the volume of the cylinder is squared by the formula r, which is equal to 4710 cubic centimeters.

Base Area:

10 2) square centimeters).

Side area: 10 cm²).

Surface area: square centimeters).

Volume: cubic centimeters).