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Leya [2.2K]
2 years ago
11

What is the area of a circle with the diameter of 10cm ?

Mathematics
2 answers:
8_murik_8 [283]2 years ago
7 0

Answer:

A≈78.54cm² Diamter= 10

Step-by-step explanation:

hope this helps

r-ruslan [8.4K]2 years ago
5 0

Answer:

A=78.54 cm sq

Step-by-step explanation:

Using the formulas

A=πr2

d=2r

Solving for A

A=1

4πd2=1

4·π·102≈78.53982cm²

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Lana71 [14]

Answer:

titutex=cos\alp,\alp∈[0:;π]

\displaystyle Then\; |x+\sqrt{1-x^2}|=\sqrt{2}(2x^2-1)\Leftright |cos\alp +sin\alp |=\sqrt{2}(2cos^2\alp -1)Then∣x+

1−x

2

∣=

2

(2x

2

−1)\Leftright∣cos\alp+sin\alp∣=

2

(2cos

2

\alp−1)

\displaystyle |\N {\sqrt{2}}cos(\alp-\frac{\pi}{4})|=\N {\sqrt{2}}cos(2\alp )\Right \alp\in[0\: ;\: \frac{\pi}{4}]\cup [\frac{3\pi}{4}\: ;\: \pi]∣N

2

cos(\alp−

4

π

)∣=N

2

cos(2\alp)\Right\alp∈[0;

4

π

]∪[

4

3π

;π]

1) \displaystyle \alp \in [0\: ;\: \frac{\pi}{4}]\alp∈[0;

4

π

]

\displaystyle cos(\alp -\frac{\pi}{4})=cos(2\alp )\dotscos(\alp−

4

π

)=cos(2\alp)…

2. \displaystyle \alp\in [\frac{3\pi}{4}\: ;\: \pi]\alp∈[

4

3π

;π]

\displaystyle -cos(\alp -\frac{\pi}{4})=cos(2\alp )\dots−cos(\alp−

4

π

)=cos(2\alp)…

1

Top

Display

6 0
3 years ago
Please answer correctly !!!! Will mark brainliest !!!!!!!!!!!!
andrezito [222]

Answer:

7-x

Step-by-step explanation:

49 - x^2 is a perfect square so

it factors to :(7+x)(7-x)

since there is a negative in 49 - x^2, it would make sense that the answer would be a negative to get that negative answer in the first place (negative times a positive equals a negative)

Forgive me for my lame explanation :')

8 0
2 years ago
Please help me!! i will give brainliest to whoever gets it correct!!
Vikki [24]

Answer:

3 times 4 over 5 equals 2.4

Step-by-step explanation:

6 0
2 years ago
Work out(3^5-5^3+2) divided 4^2
professor190 [17]

Given:

(3^5-5^3+2) divided by 4^2.

To find:

The simplified form of the given expression.

Solution:

We have, (3^5-5^3+2) divided by 4^2. Mathematically it can be written as:

\dfrac{3^5-5^3+2}{4^2}=\dfrac{243-125+2}{16}

\dfrac{3^5-5^3+2}{4^2}=\dfrac{120}{16}

\dfrac{3^5-5^3+2}{4^2}=\dfrac{15}{2}

\dfrac{3^5-5^3+2}{4^2}=7.5

Therefore, the simplified form of the given expression is 7.5.

3 0
2 years ago
Can someone help me
makkiz [27]
-2.1 + 0.3 - 1.7 - 0.4 = -3.9

answer
A. -3.9 lbs
5 0
3 years ago
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