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1. Find the total surface of a cube of side equal to 8 cm. Surface Area = 6S²
2. A sphere has a radius of 6 cm. What is its volume? Volume =4/3πr3
3. A rectangular aquarium is 6 dm by 3.5 dm by 4 dm. Find volume. Volume = l x w x h
4. A circular garden has a radius of 3m. Find the area
5. The diameter of the base of a cylinder is 10 cm and the height is 8 cm. Find the surface area. Surface area = 2πr (r + h)

Sagot :

Requireduseridn

Answer:

  1. A = 384 cm
  2. V = 904.78 cm
  3. V = 84 dm
  4. A = 9 m
  5. A = 1130.97 cm
Natasia12idn

Answer:

1. 384 cm^2

2. V≈904.78cm³

3.168 cubic dm of water.

4.A≈28.27m²

5.3080 cu.cm

Step-by-step explanation:

1. A cube has 6 faces and each face is a square with area S^2.

Units are cm.

Therefore, as the hint says, SA = 6S^2 = 6(8)^2 = 6(64) = 384 cm^2

2.V=43πr3=43·π·63≈904.77868cm³

3.5 cm x 1 dm per 10 cm = 5/10 = 0.5 dm. 4 dm - 0.5 dm = 3.5 dm water height. 8 dm x 6 dm x 3.5 dm = 168 cubic dm of water.

4.A=πr2=π·32≈28.27433m²

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