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Nady [450]
3 years ago
8

For 1–3, find the area of each circle. Use 3.14 for π. Round to the nearest tenth if necessary.

Mathematics
2 answers:
agasfer [191]3 years ago
8 0

Answer:

55.4ft

Step-by-step explanation:

andre [41]3 years ago
6 0

9514 1404 393

Answer:

  55.4 square feet

Step-by-step explanation:

The formula for the area of a circle can be written as ...

  A = (π/4)d²

For the given values, this is ...

  A = (3.14/4)(8.4 ft)² = 55.3896 ft²

The area of the circle is about 55.4 square feet.

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A semicircle has an area of 76.97 squared km. Find it’s radius
shtirl [24]

Answer:

7 km

Step-by-step explanation:

Substitute:

The equation for area of a semi-circle is \frac{r^{2}\pi }{2}

A =  \frac{r^{2}\pi }{2}

76.97 =  \frac{r^{2}\pi }{2}

Multiply by 2 on both sides:

2(76.97) = ( \frac{r^{2}\pi }{2})2

153.94 = r^{2} \pi

Divide by pi on both sides:

153.94 = r^{2} \pi

/pi           /pi

49.03 ≈ r^{2}

Find the square root:

\sqrt{49.03} =\sqrt{r^{2} }

7 = r

7 0
3 years ago
What is the value of the expression (2)^6?
Mumz [18]
The value of the expression (2)^6 is 64.
6 0
3 years ago
Read 2 more answers
Can you help me ? please ??
natali 33 [55]
60 miles per hour
so 156 miles = 156 /60 = 2.6 hours 
0.6 x 60 = 36
so 2.6 hours  = 2 hours 36 minutes

Kim leaves Rotherham at 7: 30AM
7:30 AM + 2 hours 36 minutes = 10:06 AM

Answer
Kim arrives in London after 10AM





6 0
3 years ago
QUESTION 8
vfiekz [6]
54 percent

You add the two together to get 39, then divide 21 by 39. This gives you 0.538, which turns into 54%
7 0
3 years ago
Given the parent function of f(x) = x3, what change will occur when the function is changed to f(x) − 3?
DedPeter [7]

For this case we have that the main function is given by:

f (x) = x ^ 3

We apply the following transformation:

Vertical displacements:

Assume k> 0

To graph y = f (x) - k, move the graph k units down.

For k = 3 we have:

y = f (x) - 3\\y = x ^ 3 - 3

Answer:

when the function is changed to f (x) - 3 the change that will occur is:

Vertical displacement 3 units down.

5 0
3 years ago
Read 2 more answers
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