Step 1: Understanding the Area of a Triangle and Rectangle.
The area of a triangle is given by: \[ \text{Area of triangle} = \frac{1}{2} \times \text{base} \times \text{height}. \] The area of a rectangle is: \[ \text{Area of rectangle} = \text{base} \times \text{height}. \] For the same base and height, the area of the triangle will be half the area of the rectangle. Therefore, the ratio is 1:2.
Step 2: Verifying the Options.
- Option (1): The correct ratio is 1:2.
- Option (2): 2:1 is incorrect.
- Option (3): 1:3 is incorrect.
- Option (4): 1:4 is incorrect.
Conclusion:
Therefore, the correct answer is (1) 1:2.
Find the number of triangles in the given figure.

$PQ$ is a chord of length $4\ \text{cm}$ of a circle of radius $2.5\ \text{cm}$. The tangents at $P$ and $Q$ intersect at a point $T$. Find the length of $TP$.