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olya-2409 [2.1K]
2 years ago
12

What is the approximate area of the following circle?

Mathematics
2 answers:
balu736 [363]2 years ago
8 0

Answer:

38.47 {m}^{2}

Step-by-step explanation:

The formula to find the area of a circle is

a= \pi {r}^{2}

We know that

\pi = 3.14 \:  \:  \:  \:  \:  \: r = 3.5

Therefore the area is

a= \pi {r}^{2} \\ \\ a = (3.14) {(3.5)}^{2} \\ \\ a = 3.14 \times 12.25 \\ \\ a = 38.47 {m}^{2}

PtichkaEL [24]2 years ago
3 0
Answer: 38.47 m^2

work is shown in picture :)

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An athlete eats 75 g of protein per day while training. How much protein will she eat during 21 days of training? Write your ans
lisov135 [29]

Answer:

1.575 kg

Step-by-step explanation:

75g x 21

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convert to kg

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sweet-ann [11.9K]

- 58 + 2(h - 29) - h = 41
now you must first distribute the 2 in the brackets. multiply 2 by h and (-29)

- 58 + 2h -58 - h = 41
now combine "like terms" (-58) with (-58) and 2h with (-h)

-116 + h= 41
now that h has no coefficient (no number in front) you can bring the -116 over to the other side to isolate the variable (h). remember when you bring a number over the equal sign the signs change so (-116) becomes 166.

h = 116 + 41
now add the two terms together

h = 157
the final result is 157
5 0
3 years ago
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iragen [17]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Which of the following is a factor of 2x^3+13x^2+19x+20
zzz [600]

Answer:

(x+5)

Step-by-step explanation:

2x^3+13x^2+19x+20

\frac{2x^3+13x^2+19x+20}{x+5}

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Now we got.

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