The lid of a rectangular box of sides 40 cm by 10 cm is sealed all round with tape. What is the length of the tape required?
Answer:
Length of rectangular lid = 40 cm
Breadth of rectangular lid = 10 cm
Length of the tape required is equal to perimeter of the lid.
Perimeter of the lid = 2( length + breadth) = 2(40 cm + 10 cm) = 2(50 cm) = 100 cm
Therefore, length of tape required is equal to 100 cm.
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