Find the sum of the interior angles of a 25-sided polygon

4140°

Step-by-step explanation:

To find sum of interior angles of a polygon with sides we apply the following formula:

where represents the sum of interior angles of the polygon and   represents number of sides of the polygon.

Thus, for a 25-sided polygon the sum of interior angles can be calculated by plugging in in the formula.

∴   (Answer)

4140°

Step-by-step explanation:

The exterior angles of a polygon add up to 360°. So the exterior angle of this polygon is 360 ÷ 25 = 14.4°

The interior angle of the polygon is 180 - 14.4 = 165.6°

The sum of the interior angles is 165.6 × 25 = 4140°

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.