Answer:
0.6625 square inch
Step-by-step explanation:
The area of the central square in square inches is
area = s²
= 0.25² = 0.0625.
The area of each triangular side is ...
area = 1/2bh
= 1/2·0.25·1.2 = 0.15
So, the sum of the areas of the four sides and the base is ...
4(0.15) +0.0625 = 0.6625 . . . . square inches
