Answer:
Answer D is correct
Step-by-step explanation:
This solid consists of 2 squares and 4 rectangles.
So, to find this solid's surface area, you have to find the areas of the rectangles and squares and add them together.
Therefore, the formula to find the surface of the solid is:
Surface area = 4 × area of the rectangles + 2 × areas of the squares.
Let us find it now.
S.A. = 4 × ( length × width ) + 2 × ( length × width )
S.A. = 4 × ( 10 × 4 ) + 2 × ( 4 × 4 )
S.A. = 4 × 40 + 2 × 16
S.A. = 160 + 32
S.A. = 192 cm²
