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prod=0; i=1; do { prod = prod +a[i] * b[i]; i=i+1; } while(i<=20);
how to reduce the problem of random error and systematic error while doing an experiment
A problem and a solution are not synonyms or antonyms, but rather concepts that are related. A problem is a challenge or difficulty that needs to be solved, while a solution is the resolution or answer to that problem. They are not homophones, as they do not sound alike.
Sum is the result of an addition problem, while difference is the result of a subtraction problem. Addend Subtractend + Addend - Subtractor Sum Difference
Please note that a circumference is a linear measurement (for example, meters), while area is an area measurement (for example, square meters), so the "equality" depends on the units used. Anyway, all you need to do is write the expression for the circumference, and the expression for the area, then put an equal sign in between - since the problem states that the two are equal. Then solve this equation.