What is the area of triangle pqr on the grid? a. 5 square units
b.6 square units
c.10 square units
d.12 square units

The correct option is B.

Step-by-step explanation:

The area of a triangle is

where, b is base of the triangle and h is height of the triangle.

From the given figure it is clear that the base of the triangle is PR = 4 units and the height of the triangle is perpendicular distance of side PR from vertex Q, i.e., 3 units.

Substitute b=4 and h=3 in the above formula, to find the area of triangle PQR.

On simplification we get.

The area of triangle PQR is 6 square units. Therefore the correct option is B.

irrational, cannot