Answer:
B) 1/2 pr
Step-by-step explanation:
The area of the triangle is given by:
\(A = \frac{1}{2} \text { Base }\times \text { Height }\)
In the given figure, the base of the triangle is from (0,0) to (p,0) = \(\sqrt{(p-0)^2+(0-0)^2}= p\)
The height of the triangle is from (0,0) to (0,r) = \(\sqrt{(0-0)^2+(r-0)^2}= r\)
\(\Rightarrow A = \frac{1}{2}p r\)
Thus, the area of the given triangle is \(\frac{1}{2}p r\). Option B is correct.
