Write out the formula for the Surface area of a sphere
Substitute the value for the surface area and solve for the radius.
![\begin{gathered} r^2=\frac{803.84}{4\times3.14}=64 \\ r=\sqrt[]{64} \\ r=8\operatorname{cm} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20r%5E2%3D%5Cfrac%7B803.84%7D%7B4%5Ctimes3.14%7D%3D64%20%5C%5C%20r%3D%5Csqrt%5B%5D%7B64%7D%20%5C%5C%20r%3D8%5Coperatorname%7Bcm%7D%20%5Cend%7Bgathered%7D)
Formula for the volume of a sphere
Hence, the volume of the sphere is 2144cm³(to the nearest whole number).
Subract what she rode already from total:
48-18 = 30
Divide by number of days:
30/4 = 7.5
she will need to ride 7.5 miles per day
You were on the right track.
(17/4)*(11/4)*(3/1)
first multiply the numerators
17*11*3 = 561
561 / ?
next multiply the denominators
4*4*1 = 16
561 / 16 = 35.0625 = 35 1/16
Start by looking at the components of the line, basically the legs if you were to make it a right triangle.
components = < x1 - x2, y1 - y2 >
< 10-5 , 12-4 > = < 5 , 8 >
So the line starts at A and goes right 5 then up 8 to point B.
We need a point 3:1 distance which means that if X is our new point, length AX is 3 times length of XB.
3+1 = 4 parts total
Point X will be 3/4 distance
3/4 the components
< 5(3/4) , 8(3/4) > = < 15/4 , 6 >
Add these to point A to go right and up to the new point X.
(5 + 15/4 , 4 + 6) = (35/4 , 10)
35/4 = 8 3/4
so the first one is correct.
Answer:
choice a
Step-by-step explanation:
