1% would be £60
3% would be £180
0.5% would be £30
3.5% would be £210
103.5% would be £6210
Answer:
The area of a circle is pi times radius squared. So the area is proportional to radius squared. 200/40 = 5, and 5 squared = 25.
Step-by-step explanation:
pls give me thanks and brainliest
Answer:
A
Step-by-step explanation:
So, we are given a right triangle and we know that 2x+4 is the length of the hypotenuse and 8 is the length of one of the sides.
Remember that the hypotenuse in a right triangle will always <em>always</em> be the longest side. Therefore, we can write the following inequality:
![2x+4>8\\2x>4\\x>2](https://tex.z-dn.net/?f=2x%2B4%3E8%5C%5C2x%3E4%5C%5Cx%3E2)
The answer is A.
Answer:
The probability of a dart hitting the target in the yellow zone is 0.16 or 16%
.
Step-by-step explanation:
Given:
Four concentric circles.
Radius of center circle, r = 4/2 = 2 cm
Radius of the yellow circle, R = 2+4 =6 cm
We have to find the probability that it will hit a point in the yellow region.
Formula to be used:
Probability (P) :
⇒ ![P =\frac{area\ of\ the\ yellow\ zone}{area\ of\ the\ entire\ target}](https://tex.z-dn.net/?f=P%20%3D%5Cfrac%7Barea%5C%20of%5C%20the%5C%20yellow%5C%20zone%7D%7Barea%5C%20of%5C%20the%5C%20entire%5C%20target%7D)
So,
Lets find the area of the yellow zone;
⇒ Area (yellow zone),
= Area of yellow circle - Area of the black circle
⇒ ![A_y = Area\ (yellow\ circle)-Area\ (center\ circle)](https://tex.z-dn.net/?f=A_y%20%3D%20Area%5C%20%28yellow%5C%20circle%29-Area%5C%20%28center%5C%20circle%29)
⇒ ![A_y= \pi R^2-\pi r^2](https://tex.z-dn.net/?f=A_y%3D%20%5Cpi%20R%5E2-%5Cpi%20r%5E2)
⇒ ![A_y= \pi (R^2- r^2)](https://tex.z-dn.net/?f=A_y%3D%20%5Cpi%20%28R%5E2-%20r%5E2%29)
⇒ ![A_y = \pi (6^2- 2^2)](https://tex.z-dn.net/?f=A_y%20%3D%20%5Cpi%20%286%5E2-%202%5E2%29)
⇒ ![A_y= \pi (36- 4)](https://tex.z-dn.net/?f=A_y%3D%20%5Cpi%20%2836-%204%29)
⇒
cm^2
Now,
⇒ Area of the entire target, A1:
⇒ ![A_1=\pi (R_1)^2](https://tex.z-dn.net/?f=A_1%3D%5Cpi%20%28R_1%29%5E2)
⇒
<em> ...R1=14 cm</em>
⇒
cm^2
Probability:
⇒ ![P=\frac{A_y}{A_1}](https://tex.z-dn.net/?f=P%3D%5Cfrac%7BA_y%7D%7BA_1%7D)
⇒ ![P=\frac{\pi (32) }{\pi (196)}](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B%5Cpi%20%2832%29%20%7D%7B%5Cpi%20%28196%29%7D)
⇒ ![P=\frac{32 }{196}](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B32%20%7D%7B196%7D)
⇒ ![P=0.16](https://tex.z-dn.net/?f=P%3D0.16)
In terms of percentage it is ![0.16\times 100=16\%](https://tex.z-dn.net/?f=0.16%5Ctimes%20100%3D16%5C%25)
The probability of a dart hitting the target in the yellow zone is 0.16 or 16%
.