You can use the formulas:
Area = \(\frac{base*altitude}{2}\)
AB = \(\sqrt{ ( x_{B}- x_{A} )^{2} + ( y_{B}- y_{A} )^{2} }\)
P(-2, 1), Q(6, 1), R(4, -3), S(4, 1)
Base = PQ = \(\sqrt{ 8^{2} + 0^{2} } =8\)
Altitude = SR = \(\sqrt{ (0^{2} + (4^{2} } =4\)
Area = \(\frac{8*4}{2} =16\)
The right answer is : B. 16
