Answer:
864 units²
Step-by-step explanation:
Area of each sloped side,
= 1/2 x base x height
= 1/2 x 16 x 19 = 152 units²
There are 4 sloped sides, so area of all sloped sides = 4 x 152 = 608 units²
Area of base = Length x Width = 16 x 16 = 256 units²
Total surf. area = area of all sloped sides + area of base
= 608 + 256
= 864 units²
