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The figure shows a test tube made of a hollow cylinder of radius 2 cm at the top and hollow hemishere of the same radius of the button. The height of the test tube is 10 cm. Find the height of a cylinder and surface area of the test tube.
Solution: _______
Answer: _____ cm²
The figure shows a test tube made of a hollow cylinder of radius 2 cm at the top and hollow hemishere of the same radius of the button. The height of the test tube is 10 cm. Find the height of a cylinder and surface area of the test tube.
Solution: _______
Answer: _____ cm²
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Answer:
Solution:
Cylinder SA= 2Πr (h+r)
2×3.14×2(2+10)
2×3.14×2(12)
2×3.14×2×12
Answer: 150.72 m²