To find the midpoint of a line use the midpoint formula which is M = (x1+x2/2 , y1 +y2/2) After plugging in the coordinates for your variables you should get (-1+5/2, -1+2/2) This simplifies to (2, 1/2) which is the coordinates for the middle point of the base XY.
Answer: Id say b
Step-by-step explanation: a would be too high and a bit too detailed. Whereas c and d will be inaccurate.
0.74=74/100=37/50 in simplest form.
Answer:

Step-by-step explanation:
we know that
If the tank half-filled with water is at 20 feet, then the height of the tank is 40 feet
The volume of the cylindrical tank is equal to

we have


assume

substitute and solve for r

![r^{2}=6,000/[(3.14)(40)]](https://tex.z-dn.net/?f=r%5E%7B2%7D%3D6%2C000%2F%5B%283.14%29%2840%29%5D)

Find the diameter
Remember that the diameter is two times the radius
