240 is the correct answer.
The area formula of a circle is π×
![r^{2}](https://tex.z-dn.net/?f=%20r%5E%7B2%7D%20)
pi is 3.14 and r is the radius. The question gives you the diameter. To find the radius with a given diameter, divide the diameter by 2. 24÷2=12. The radius is 12. Now we can multiply 3.14×
![12^{2}](https://tex.z-dn.net/?f=%2012%5E%7B2%7D%20)
do the exponents first. 12×12=144. Now multiply that by pi. 144×3.14=452.16
1) x^2=64 is the same as x=the root of 64 which gives us: (+-)8
2) here you must us pq-formel as:
5m^2-5m=60
5m^2-5m-60=0
(m^2-5m-60)/5=0
m^2-m-12=0
m=0,5(+-) the root of 0,25+12
m=0,5(+-)3,5
m1=0,5+3,5
m2=0,5-3,5
15) x^2=7x
x^2-7x=0 here there is two x, so:
x(x-7)=0
x1=0
x2=7
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Here you can only use PQ formula in all the others, just as I did in the question number 2</span>
First, subtract to get the difference.
2.85 – 2.78 = 0.07
Next, divide 2.78 by 100
2.78 ÷ 100 = 0.0278
So, 0.0278 is 1%. Divide 0.07 by 0.0278 to get the answer.
0.07 ÷ 0.0278 ≈ 2.518
2.518 ≈2.5
Therefore, the percentage increase is approximately 2.5% (that's the answer).
Hope this helps!
Answer:
7
Step-by-step explanation:
To find the missing value for the ratio, find number that multiply 8 to 56.
8*7 = 56.
So the numerator is 1 * 7 = 7.