A rectangular park has its four vertices at P(0,0), Q(0,40), R(60,40) and S(60,0), where each unit represents 1 m.
(i) Find the midpoint M of side QR.
(ii) A water tap is located at T(30,50). Calculate the distance MT to the nearest metre.
a. Find the midpoint M of side QR.
b. A water tap is located at T(30,50). Calculate the distance MT to the nearest metre.