In the figure, ABCD is a rectangle. Find the area of the shaded region.
Answer & explanation
Correct answer: option 2
Area of the shaded region = Area of rectangle - Area of blank part.
= 14 × 12 - (\(\frac{1}{2}\) × 5 × (5 + 4)
= 168 - 22.5 = $145.5 cm^2$