Find the area of the regular octagon if the apothem is 3 cm and a side is 2.5 cm? Round to the nearest whole number.
i really dont understand the whole thing.
i really dont understand the whole thing.
Should be
Then
is the total area of the octagon.
Hope you understand. If not, please tell me.
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I get
Given the apothem length, the area of a regular polygon becomes
So, plugging in the given values, we get
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To find the area of the regular octagon, we can use the formula:
[ \text{Area} = \frac{1}{2} \times \text{apothem} \times \text{perimeter} ]
Given that the apothem ((a)) is 3 cm and the side length ((s)) is 2.5 cm, we can first find the perimeter ((P)) of the octagon:
[ P = 8 \times s = 8 \times 2.5 ]
Then, we can plug the values into the formula to find the area:
[ \text{Area} = \frac{1}{2} \times 3 \times (8 \times 2.5) ]
[ \text{Area} = \frac{1}{2} \times 3 \times 20 ]
[ \text{Area} = \frac{3 \times 20}{2} ]
[ \text{Area} = \frac{60}{2} ]
[ \text{Area} = 30 ]
Rounding to the nearest whole number, the area of the regular octagon is 30 square centimeters.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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