Answer:
the answer is 3
Step-by-step explanation:
Answer: 331.5 inches²
Step-by-step explanation:
To solve for the area of a regular octagon, we can use the formula that is shown below:
Area = 1/2 × apothem × perimeter
In this problem, we have been given the following values:
Apothem = 10 inches
Perimeter = 66.3 inches
To solve for the area,
Area = 1/2 × apothem × perimeter
Area = 1/2 × 10 × 66.3
Area = 331.5 inches²
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Answer:
Step-by-step explanation:
Step-1 : Multiply the coefficient of the first term by the constant 1 • -6 = -6
Step-2 : Find two factors of -6 whose sum equals the coefficient of the middle term, which is 2 .
The window has a shape of a semi-circle (half of a circle).
We know the diameter d = 12 ft.
The area of a (complete) circle is given by the formula:
A = π × r²
The radius can be found by halving the diameter:
r = d ÷ 2
= 12 ÷ 2
= 6 ft
Therefore the area of the circle will be:
<span>A = π × r²
= 3.14 × 6</span>²
= <span>3.14 × 36
= 113.04 ft²
And the area of the semi-circle:
A = </span><span>113.04 </span>÷ 2
= 56.52 ft²
Hence, the area of the window will be 56.52 ft².
