The first, second, fifth, and seventh are all true
The perimeter of a semicircle consists of two parts. (the curve and bottom)
That curve is half the distance around the circle, since it's been split in half.
The distance around a circle, the circumfrence, is equal to 2πr, where r is the radius of that circle. In this case, the circumfrence of the entire circle would be 16π. and so that curve would have a length of just 8π.
Using 3.14 for π, 8π = 8×3.14 = 25.12.
As for the flat part, that is the diameter (distance across) our circle.
The radius is the distance from the center of a circle to its edge, and always has half the length of the diameter. (you can break the diameter down into two radii)
If our radius is 8 meters, our diameter (the flat part of that semicircle) must be 16.
Now we add up the two parts of the perimeter...25.12 + 16 = 41.12.
Answer:
I think 6 I don't see it being anything other than that I can't even think right now that's crazy
Answer:
sin(θ) = sin(θ + 2π) = -sin(-θ)
b and d
This can be shown by substituting a value for θ
sin(π ÷ 3) = 1/2
sin(π ÷ 3 + 2π) = 1/2
-sin(π ÷ 3) = -1/2
-sin(-π ÷ 3) = 1/2
sin(π ÷ 3 + π ÷ 2) = √3/2
The number of costumes she can alter in four and a half hours is 18 customes.
<h3>How to calculate the number of custome?</h3>
From the information, the number of costumes she can alter varies directly with the amount of time spent working.
Since Belinda can alter four costumes in one hour, let the number of costumes she can alter in four and a half hours be represented by x.
This will be:
1/4 = 4.5/x
Cross multiply
x = 4.5 × 4.
x = 18
The number is 18.
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