Answer: option a
Step-by-step explanation:
You must apply the formula for calculate the surface area of the prism, which is shown below:
[tex]SA=bh+2ls+lb[/tex]
Where:
b=8 cm
h=3 cm
l=10 cm
s=5 cm
When you susbstitute the values shown above into the formula for calculate the surface area, therefore you obtain:
[tex]SA=(8cm*3cm)+2(10cm*5cm)+(10cm*8cm)\\SA=204cm^{2}[/tex]
