Respuesta :

Answer:

180

((10 + 20/2) * 12 = 180

Step-by-step explanation:

saharamagar2020

Step-by-step explanation:

Given;

b = 10cm

a = 20cm

h = 12cm

Area of trapezoid = 1/2 *h*(a+b)

                               = 1/2 *12* ( 20+10)

                               = 180cm^2