<u>Given:</u><u> </u>
- Circle with radius 5cm and 3 cm
<u>To </u><u>Find</u><u>:</u><u> </u>
- How much bigger is the area of a circle.
<u>Solution:</u>
Area of circle with Radius 5cm
Area of circle = πr²
Area of circle = 22/7 × 5 × 5
Area of circle = 22/7 × 25
Area of circle = <u>78.54 </u><u>cm</u><u>²</u>
Now,
Area of circle with Radius 3 cm
Area of circle = 22/7 × 3 × 3
Area of circle = 22/7 × 9
Area of circle = <u>28.27 cm²</u>
= 78.54 - 28.27
= 50.27cm
Hence,
- <u>Area of circle is 50.27</u><u>c</u><u>m</u><u> more than that area of circle with radius 3cm</u>
Answer:
I am pretty sure that $15.50 is the answer
Answer: y > -1/2x + 2
Step-by-step explanation: first, in order to find the inequalities you should find the gradient by choosing two points from the line and you should you the formula m=y2-y1/x2-x1 to find the gradient.
Next, you should find the y-intercept in order to complete the inequality it can be easily found as the y-intercept is the place where the line crosses the y axis
Then you create your equation { y = -1/2x + 2 } and then if above the line is shaded then it is {> greater than} and if below the line is shaded then it should be {< less than}
(so you should replace the equation with the lesser or greater sign according to the way the graph is shaded)
We have to mutiply factor -2/3 times every agument from the parenthesis.
/+8b
8+6b=-4 /-8
6b=-12 /:6
b=-2 - its the answer
Presume y=kx +b,then substitute (3,0)&(5,4),
When x=3,y=0,so 3k+b=0;
When x=5,y=4,so 5k+b=4;
Now u can know that k=2,b=-6.
The answer is:y=2x-6.
