Brunelleschi solve his problem with the dome of the Florence Cathedral by employing sets of diagonal ribs based on the pointed arch and he also created many layers of support within the dome. The answer in this question is by employing sets of diagonal ribs based on the pointed arch.
Simple interest is interest only calculated by multiplying the principal amount by the interest rate and the number of periods in a loan. However compound interest is interest on interest. It is calculated by multiplying the principal amount by the annual interest rate raised to the number of compound periods.
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Through writing, it is called "libel" but if they say it it is called "slander"