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 reguired
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100cm
Step-by-step explanation:
length of a rectangle is equal to 2 into length + breadth it means 2 into 40 + 10 so40 + 10 is equal to 50 and 50 × 2 is equal to 100
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