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3 years ago

The figure shown in the right is made up of a square and a circle. Find the perimeter of the shaded region.

Mathematics

2 answers:

Tasya [4]3 years ago

6 0

Answer:

B. 12 + 2pi cm

Step-by-step explanation:

The shaded region is made up of 3 square sides and one half circle. The three square sides are each 4, which means that those altogether equal 12.

The circle's circumference can be found by using the equation c = (d)pi

The diameter is 4, so the whole circumference is 4pi. However, you only need half of a circle, which is represented by 2pi.

Add them all together, and you get 12 + 2pi cm.

lianna [129]3 years ago

6 0

Answer: i think B

Step-by-step explanation:

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If the circumference of the circle is 37.68 units, what is the area? (Use 3.14 for pi .)

cricket20 [7]

Answer:

Area of the circle = $113.04\;units^2$

Step-by-step explanation:

Circumference = $37.68\;units$

Circumference of the circle = $2\times \pi \times r$

As,

$\pi =\dfrac{22}{7}=3.14$

$37.68=2\times \pi \times r\\\\37.68=2\times 3.14 \times r\\\\37.68=6.28\times r\\\\r=\dfrac{37.68}{6.28} \\\\r=6\;units$

Area of a circle = $\pi \times r^2$

$=3.14\times (6\times 6)\\\\=3.14\times 36\\\\=113.04\;units^2$

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3 years ago

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sertanlavr [38]

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3 years ago

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pantera1 [17]

100 - 55
10 - x
= 5.5
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3 years ago

In chemistry class 18 liters of 30% alcohol solution must be mixed with 20% solution to get 14% solution how many liters of 20%

alexdok [17]

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3 years ago

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Aleks [24]

Answer:

the answer is C. how you got 24

Step-by-step explanation:

so find the square of 2 first and that would give -8

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3 years ago

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