A piece of string 25 cm long goes exactly once round the edge of a plate in the form of a quadrant. Calculate the area of the quadrant.

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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