Respuesta :

Answer:

  = 42 in^2

Step-by-step explanation:

This figure is a trapezoid

The area of a trapezoid is given by

A = 1/2 (b1+b2) h  where b1 and b2 are the top and bottom bases and h is the height

A = 1/2( 13+8)* 4

A = 1/2(21)*4

   = 42 in^2