What is the distance between r(–3, 1) and s(4, 5)? round to the nearest tenth.

R(–3, 1), S(4, 5)
calculate vector:
v=(4-(-3),5-1)=(7,4)

distance=length of vector=√(7²+4²)=√(49+16)=√(65)≈8.06226
rounded to the nearest tenth: 8.1