Question

galina is finding the area of triangle rst. to do so, she follows the steps in the table.
step 1 draw a rectangle around triangle rst.
step 2 find the area of the rectangle.
step 3 find the area of the three right - triangles created by the sides of the rectangle and the intersection with each vertex of the triangle.
step 4 subtract the area of the right triangles from the area of the rectangle.
to solve the problem using these steps, what are the dimensions of the rectangle she should draw?
3 units by 4 units
3 units by 5 units
4 units by 5 units

Explanation:

Step1: Analyze the triangle on the grid

By observing the triangle on the grid, we can determine the minimum - sized rectangle that can enclose it. The horizontal and vertical distances from the out - most points of the triangle are used to find the rectangle's dimensions.

Step2: Count the units

Counting the grid units, we find that the rectangle should have a length of 4 units and a width of 5 units.

Answer:

4 units by 5 units