1.

The length and diameter of a straw are 12 cm and 6 mm respectively. What is the ratio of its diameter to its length?

Answer»

Length of a straw = 12 cm = 120 mm 

its diameter = 6 mm 

According to question, required ratio, 

= 6 : 120 = (6/120)

= 1/20 = 1 : 20



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