Answer with Step-by-step explanation:
The area of a triangle when one angle a is given is given by:
[tex]A=\dfrac{1}{2}\times sina\times (Product\ of\ sides\ adjacent\ to\ angle\ a)[/tex]
Here a=49 and sides adjacent to angle a are 7.2 and 6.4
[tex]A=\dfrac{1}{2}\times sin49\° \times 7.2\times 6.4\\\\A=\dfrac{1}{2}\times 0.75\times 7.2\times 6.4\\\\A=17.4\ cm^2[/tex]
Hence, Area of given triangle is:
17.4 cm²
