Respuesta :

Answer:

A = 30 ft^2

Step-by-step explanation:

The area of a trapezoid is found by

A = 1/2 (a1+a2)h

where a1 is the top of the trapezoid and a2 is the bottom of the trapezoid

a1=3  a2=12  h=4

A = 1/2(3+12)*4

A = 1/2 (15)4

A = 1/2(60)

A = 30 ft^2

Answer:

A = 30 ft^2

Step-by-step explanation: