Answer:
√41
Step-by-step explanation:
The distance formula is expressed as;
D = √(y2-y1)²+(x2-x1)²
D = √(4-9)²+(-1+5)²
D = √(-5)²+4²
D = √25+16
D = √41
Hence the required distance between F and J is √41
circumference=2πr
=2*3.14*2
=12.56 km
She spent $10.12
8.60*.07 = .602, round that to .60
8.60 + .60 = 9.2
9.2*.10 = .92
9.2 + .92 = 10.12