Questions: In the graph below, each grid square represents one square yard.
What is the area of the shaded figure?
A 20 yd^2
B 30 yd^2
C 36 y^2
Transcript text: In the graph below, each grid square represents one square yard.
What is the area of the shaded figure?
A $20 y d^{2}$
B $30 \mathrm{yd}^{2}$
C $36 y^{2}$
Solution
Solution Steps
Step 1: Identify the Shape and Grid
The shaded figure is a quadrilateral, and each grid square represents one square yard.
Step 2: Decompose the Shape
Decompose the quadrilateral into two triangles by drawing a diagonal from one vertex to the opposite vertex.
Step 3: Calculate the Area of Each Triangle
Triangle 1:
Base = 6 yards (horizontal distance)
Height = 5 yards (vertical distance)
Area = 1/2 * base * height = 1/2 * 6 * 5 = 15 square yards
Triangle 2:
Base = 6 yards (horizontal distance)
Height = 5 yards (vertical distance)
Area = 1/2 * base * height = 1/2 * 6 * 5 = 15 square yards
Final Answer
The area of the shaded figure is the sum of the areas of the two triangles:
\[ 15 \text{ square yards} + 15 \text{ square yards} = 30 \text{ square yards} \]
The correct answer is:
\[ \boxed{30 \text{ yd}^2} \]