Y = 10
-4 * 10 = 40
Hope this helps!!!:):):)
The formula for the area of a sector in radians is

, where theta is the angle in radians. For us, the formula looks like this:

. Doing all the multiplication on that gives us

. Multiplying in pi and rounding to the nearest tenth gives us an area of 76.3 meters squared. You can use the formula for the area of a sector with the angle in degrees as well. Just replace the 360 degrees with 2pi and it works the exact same way.
Answer:
9/10
Step-by-step explanation:
It takes alvin 20 weeks, and it takes buzzy 15 weeks