Ruiz needs to buy a countertop for a kitchen. he calculated the area to be 16 square feet. the actual area is 15.4 square feet. what is ruiz's percentage error?
a.0.6%
b.3.75%
c.3.9%
d.6%

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²