Here is a trapezium, work out its area

The rectangular part is 30 cm^2 and the triangular part is 10 because the base is the top of the trapezium subtracted from the base of 10.

So the overall area is 30 cm^2

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.