During an archaeological dig, a coordinate grid is laid over the site to identify the location of artifacts as they are excavated. During a dig, three corners of a triangular building have been partially unearthed at (-1, 6), (4, 5), and (-3, -4).

If each square on the grid measures one square foot, estimate the area of the floor of the building.
a. about 50ft2 c. about 10ft2
b. about 26ft2 d. about 70ft2

Question

During an archaeological dig, a coordinate grid is laid over the site to identify the location of artifacts as they are excavated.  During a dig, three corners of a triangular building have been partially unearthed at (-1, 6), (4, 5), and (-3, -4).

If each square on the grid measures one square foot, estimate the area of the floor of the building.
a. about 50ft2 c. about 10ft2 
b. about 26ft2 d. about 70ft2