The lid of a rectangular box, with sides 40 cm by 10 cm, is sealed all around with tape. What is the length of the tape required?
To find the length of tape required to seal the lid of a rectangular box with sides 40 cm by 10 cm, you need to find the perimeter of the lid because you will be sealing all around its edges.
The perimeter of a rectangle is calculated as follows:
Perimeter = 2 * (Length + Width)
In this case, the length of the lid is 40 cm, and the width is 10 cm. Plug these values into the formula:
Perimeter = 2 * (40 cm + 10 cm) = 2 * 50 cm = 100 cm
So, you would need 100 cm of tape to seal the lid of the rectangular box all around its edges.
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