What is the total volume of a cylinder with a diameter and height of 6cm at the bottom and how many square centimeters is the total surface area?

What is the total volume of a cylinder with a diameter and height of 6cm at the bottom and how many square centimeters is the total surface area?

Total volume = 3.14 × 6 & # 178; △ 4 × 6 = 169.56 CM & # 179;
Total surface area = 3.14 × 6 & # 178; △ 4 × 4 + 3.14 × 6 × 6 = 226.08 CM & # 178;

Saw a 2-meter-long cylinder wood into two sections of the same length, the surface area increased by 210 square centimeters______ Cubic centimeter

2 m = 200 cm, 210 ／ 2 × 200, = 105 × 200, = 21000 (cubic cm). Answer: the volume of this wood is 21000 cubic cm. So the answer is: 21000

For a cylinder with a diameter of 8 cm and a height of 5 cm, calculate its surface area and volume

Surface area of cylinder: side area + bottom area × 2
Side area: 3.14 × diameter × height
Bottom area: square of radius × 3.14
Answer: 138.16 square centimeters
Volume of cylinder: 3.14 × square of radius × height
Answer: 50.24 cm3

A cylinder with a radius of 8 cm and a height of 10 cm is cut vertically along its bottom diameter. How many square centimeters does the surface area increase?

8*2*10*2=320