Answer:
Area of a semi circle is 1/2πr²
r = radius
Area = 1/2 × π × 18²
= 162π
= 508.94km²
Hope this helps.
If you need me to clarify anything i got you
A. It's is zero or the center of the grid.
B. Go to the first number on the x axis then for the second number go up the t axis.
Answer: No they are not equal.
Step-by-step explanation:
