The capacity of your cousin is one roti when the radius is 4 cm. The__ of the rotis made by your mother must be 14th so that your cousin can eat 4 rotis.
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Solution
Since the roti can be visualised as a circle, the quantity that is directly related to the quantity of roti is the area of the rotis. Hence, the area of the roti for your cousin must be 14th the area of your roti.