Area of Circle = πr^2
Since we know that r=6.3:
π(6.3)^2=39.69 π=124.690
So, the area would be 124.690.
1.
a. let k = constant
k = y/x
so k = 14/2 = 7
b. the equation would be y = 7x
2. a. k = y/x = 25/5 = 5
b. y = 5x
c. 50 = 5x, x = 50/5 = 10
Answer:
D
Step-by-step explanation:
Set up to different integrals that match the endpoints
so in our case it would look like
![\int\limits^0_{-2} {x} \, dx +\int\limits^1_0 {x+1} \, dx](https://tex.z-dn.net/?f=%5Cint%5Climits%5E0_%7B-2%7D%20%7Bx%7D%20%5C%2C%20dx%20%2B%5Cint%5Climits%5E1_0%20%7Bx%2B1%7D%20%5C%2C%20dx)
now it's just a matter of computing it
![\int\limits^0_{-2} {x} \, dx =x^2\\0^2-(-2)^2=4\\\int\limits^1_0 {x+1} \, dx =\frac{x^2}{2}+x\\\frac{1}{2}+1-0=\frac{3}{2}\\\frac{3}{2}+4=\frac{11}{2}](https://tex.z-dn.net/?f=%5Cint%5Climits%5E0_%7B-2%7D%20%7Bx%7D%20%5C%2C%20dx%20%3Dx%5E2%5C%5C0%5E2-%28-2%29%5E2%3D4%5C%5C%5Cint%5Climits%5E1_0%20%7Bx%2B1%7D%20%5C%2C%20dx%20%3D%5Cfrac%7Bx%5E2%7D%7B2%7D%2Bx%5C%5C%5Cfrac%7B1%7D%7B2%7D%2B1-0%3D%5Cfrac%7B3%7D%7B2%7D%5C%5C%5Cfrac%7B3%7D%7B2%7D%2B4%3D%5Cfrac%7B11%7D%7B2%7D)
Answer:
10y+4
Step-by-step explanation:
perimeter=2(l+b)
2(4y+(y+2))
2(4y+y+2)
2(5y+2)
10y+4