Respuesta :

vivianchauu
A = 1/2bh

b = 8
h = 5

1/2 x 8 = 4
4 x 5 = 20cm

Hope this helps! :)
slothpandabot
Your answer is going to be 20cm actually had this worksheet in my old worksheets folder from a while back and checked the answer and 20cm is correct