a company packages its milk powder in a cylindrical container whose base has a diameter of 28cm and height is 32cm. company places a label around the surface of the container.if the label is placed 4cm from top to bottom, what is the are of the label ?(use 22/7)
Answers
Given : a company packages its milk powder in a cylindrical container whose base has a diameter of 28cm and height is 32cm. company places a label around the surface of the container. the label is placed 4 cm from top to bottom
To find : area of the label
Solution:
cylindrical container whose base has a diameter of 28cm and height is 32cm
Diameter = 28 cm
=> Radius = Diameter/2 = 28/2 = 14 cm
height = 32 cm
label is placed 4cm from top to bottom,
=> Height of Label = 32 - 4 = 28 cm
Area of Label = 2πrh
π = 22/7
r = 14 cm
h = 28 cm
Area of Label = 2(22/7) * 14 * 28
= 2464 cm²
if label is placed 4cm from top and bottom,
Then Height of Label = 32 - 4 - 4 = 24 cm
Area of Label = 2(22/7) * 14 * 24
= 2112 cm²
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Step-by-step explanation:
Given a company packages its milk powder in a cylindrical container whose base has a diameter of 28 cm and height is 32 cm. company places a label around the surface of the container.if the label is placed 4cm from top to bottom, what is the are of the label ?
- Given the label is a hollow cylinder.
- So diameter = 28 cm
- Radius = d/2 = 28 / 2 = 14 cm
- Also height = 32 – 4 – 4
- = 24 cm
- Now area of label = curved surface area of cylinder.
- = 2 x π x r x h
- = 2 x 22/7 x 14 x 24
- = 88 x 24
- = 2112 sq cm
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