In the diagram, each small square is $1 \mathrm{~cm}$ by $1 \mathrm{~cm}$. The area of the shaded region, in square centimetres, is
(A) 2.75
(D) 4.5
(B) 3
(C) 3.25
(E) 6

![](https://cdn.mathpix.com/cropped/2024_04_20_6ed09463f225f8ba1f07g-143.jpg?height=279&width=288&top_left_y=2202&top_left_x=1382)
In the diagram, each small square is $1 \mathrm{~cm}$ by $1 \mathrm{~cm}$. The area of the shaded region, in square centimetres, is
(A) 2.75
(B) 3
(C) 3.25
(D) 4.5
(E) 6

![](https://cdn.mathpix.com/cropped/2024_04_20_faa9db06d997f2a5b9b1g-241.jpg?height=325&width=322&top_left_y=1965&top_left_x=1495)

## Solution

The shaded triangle has a base of $2 \mathrm{~cm}$ and a height of $3 \mathrm{~cm}$.

Its area is $\frac{2 \times 3}{2}=3$ (sq. cm).

ANSWER: (B)