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Kazeer [188]
4 years ago
15

Please help with this and explain :)

Mathematics
1 answer:
Sergio039 [100]4 years ago
7 0
Diameter of semicircle is 4 cm
so cicumference of circle is 4pi
since there are 4 semicircles, they add up to 2 circles
so total perimeter is 8pi
which when rounded off is 25.13 cm (2d. p.)
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a circle with a radius of 1 cm sits inside a 3cm x 3cm rectangle. What is the area of the shaded region (the rectangle is shaded
masha68 [24]

Answer:

The area of the shaded region is 5.86\ cm^{2}

Step-by-step explanation:

we know that

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so

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D.
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3 0
4 years ago
Let f (x) = 2x^2+12x-6, give the vertex. HINT: use formula -b/2a, y=f (-b/2a)
ivolga24 [154]
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-2 ×^2 - 4y +6. x=-3. y=-2 <br> evaluate ​
gladu [14]

Answer:

<u><em>Answer is below</em></u>

Step-by-step explanation:

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<em><u>Evaluate simply means to form an idea of something</u></em>

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<em><u>−2(−3)2−(4)(−2)+6</u></em>

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8 0
3 years ago
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