The ideal radius Alan must control is
cm.
<h3>Define perimeter of circle.</h3>
The measurement of the circle's perimeter, also known as its circumference, is called the circle's boundary. The area of a circle determines the space it takes up. A circle's diameter is equal to the length of a straight line traced through its center. Usually, it is stated in terms of units like cm or m.
Given data -
Perimeter of circular plate = 10
cm
We know that perimeter of a circle is 2
r
Therefore 10
= 2
r
r = 5 cm
The given error Alan can make is +-1 cm.
Minimum radius is given by
2
r = 10
- 1
r = ![\frac{10\pi - 1 }{2\pi }](https://tex.z-dn.net/?f=%5Cfrac%7B10%5Cpi%20-%201%20%7D%7B2%5Cpi%20%7D)
r = 5 - ![\frac{1}{2\pi }](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%5Cpi%20%7D)
Maximum radius is given by
2
r = 10
+ 1
r = ![\frac{10\pi + 1 }{2\pi }](https://tex.z-dn.net/?f=%5Cfrac%7B10%5Cpi%20%2B%201%20%7D%7B2%5Cpi%20%7D)
r = 5 + ![\frac{1}{2\pi }](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%5Cpi%20%7D)
The ideal radius Alan must control is
cm.
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Answer:
Chloe swam further. 16/40 to 25/40
Step-by-step explanation:
2/5 5/8
Find greatest common factor of 5 and 8 which is 40.
5x8=40 so multiply the same at the top.
2/5=16/40
5/8=25/40
16/40<25/40.
Chloe swam further
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Given</u>
- SP = $25
- SP = CP + 25% = 1.25CP
<u>Find cost price for each memory card</u>
- 25 = 1.25CP
- CP = 25/1.25
- CP = 20
<u>The store paid for 50 memory cards</u>