Answer:
6/9
Step-by-step explanation:
Answer:
39.0953=39cm2
Step-by-step explanation:
Minor arc =70
Angle of arc=70
Then this sector =70/360=7/36 of the circle
Then area = 7/36x3.14x8x8=39cm2 approximatly
Volume=legnth times width times height
legnth=8
width=5
height=4
volume=8 times 5 times 4=160
volume is 160 cubic inches or 160 in^3
Volume of cube = ( side)^3
Side = 6 feet = 6×12 = 72 inches ( 1ft =12 inch)
Vol. = (72)^3 = 72×72×72= 373248 cubic inches
First we join the two endpoints of the semicircle and that will be the diameter.
And to find the length of the diameter, we have to use distance formula, with one endpoint (3,2) and the other is (-4,-2) .
SO we get
![Diameter = \sqrt{ {-4-3)^2 +(-2-2)^2 } = \sqrt{49+16} = \sqrt 65](https://tex.z-dn.net/?f=%20Diameter%20%3D%20%5Csqrt%7B%20%7B-4-3%29%5E2%20%2B%28-2-2%29%5E2%20%7D%20%3D%20%5Csqrt%7B49%2B16%7D%20%3D%20%5Csqrt%2065%20)
Radius is half of diameter, so the radius is
![Radius= \frac{ \sqrt{65}}{2}](https://tex.z-dn.net/?f=%20Radius%3D%20%5Cfrac%7B%20%5Csqrt%7B65%7D%7D%7B2%7D%20)
Formula of area of circle is
![Area = \pi r^2](https://tex.z-dn.net/?f=%20Area%20%3D%20%5Cpi%20r%5E2%20)
So the area of semicircle is
![=(1/2) \pi ( \frac{ \sqrt{65}}{2})^2 = 8.125 \pi \square \units](https://tex.z-dn.net/?f=%20%3D%281%2F2%29%20%5Cpi%20%28%20%5Cfrac%7B%20%5Csqrt%7B65%7D%7D%7B2%7D%29%5E2%20%3D%208.125%20%5Cpi%20%5Csquare%20%5Cunits%20)
And the other figure is a triangle, with
![Base = 3-(-4)=3+4=7 \\ height = 2-(-2) = 2+2 =4](https://tex.z-dn.net/?f=%20Base%20%3D%203-%28-4%29%3D3%2B4%3D7%20%5C%5C%20height%20%3D%202-%28-2%29%20%3D%202%2B2%20%3D4%20)
![Area = (1/2)*4*7= 14 square units](https://tex.z-dn.net/?f=%20Area%20%3D%20%281%2F2%29%2A4%2A7%3D%2014%20square%20units%20)
Therefore, total area is the sum of area of semicircle and area of triangle,
And we will get
![Total \ area= 14 + 8.125 \pi \ units^2](https://tex.z-dn.net/?f=%20Total%20%5C%20area%3D%2014%20%2B%208.125%20%5Cpi%20%5C%20units%5E2%20)
Correct option is the third option .