To determine how many degrees represent rent on a circle graph, you can follow these steps:
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Calculate the total degrees of the circle graph: A circle has a total of 360 degrees.
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Find the percentage of expenses spent on rent: Sara spent $1620 on rent out of total expenses of $5400. The percentage spent on rent can be calculated as follows:
\[ \text{Percentage on rent} = \frac{1620}{5400} \times 100 = 30% \]
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Calculate the degrees for rent: Now, convert the percentage of rent into degrees by multiplying it by the total degrees of the circle graph:
\[ \text{Degrees for rent} = 30% \times 360 = \frac{30}{100} \times 360 = 108 \text{ degrees} \]
Thus, the degrees that must represent rent on the circle graph is:
Rent covers 108 degrees of the circle graph.