# A, B and C form the vertices of a triangle. #BC = 5.7cm# and #angle CBA = 137 degrees#. Given that the area of the triangle is # 10.4 cm^2#, what is the perimeter of the triangle?

##### 1 Answer

Jul 31, 2018

#### Explanation:

Recall that, the **Area** of

Further, by the **cosine-rule,**

Thus, we have,

Hence, the reqd. **perimeter**