Each friend pays $2250/5 = $450 per month as a shared resident.
Answer:
pi r squared divided by 2 for the half circle then add the area of the box to you number and there is your area
A: When you multiply two numbers, their exponents add.
So,

Since 64^1/2 multiplied by itself is 64, then it is the square root of 64.
B: The area is irrational. 7 * √7 is irrational.
Are you asking if this is greater than, less than, or equal to?
I attached a pic with my work on it. Hope this helps!