Answer:
78.5 in.²
Explanation:
Formula For Area Of Circle: Area = πr²
π: 3.14
r (Half Of Diameter): 5
r²: 25
3.14 · 25 = 78.5
Hey there!
1/(√2+√3)-√4
=−2−√2+√3
(Decimal: -1.682163)