Answer:
The answer is 4a-12
Step-by-step explanation:
Hope this helped :>
Answer: 131.1287 square mm (approx)
Step-by-step explanation:
The area of a triangle,

Where
and
are adjacent sides and
is the include angle of these sides,
Here PR and QR are adjacent sides and ∠R is the included angle of these sides,
Thus, we can write,
,
and
,
Thus, the area of the triangle PQR,


Answer:
2nd and obtuse triangle - should be - double check
Step-by-step explanation: