Draw a net for the prism. Then calculate the area of each face, and the total surface area. Area of the front =20cm^(2) Area of the back =20cm^(2) Area of the top =1cm^(2) Area of the bottom =15cmcm ^(2) Area of the right side =(15)/(15)cm^(2) Area of the left side =1cm^(2) 4cm Total Surface Area =cm^(2)