X=90y=70I used the process of elimination.
Answer:
90
Step-by-step explanation:
1/3 BH = 1/3(30)(9) = 90
I think it’s the second one b
I hope this helps :)
Answer: 
Step-by-step explanation:
Given
The side of the triangle are 
Suppose the third side is 
Also, the sum of the two sides of the triangle is always greater than the third

Similarly,

Also,

From (i) and (ii) we get

The correct answer would be C