Question 1121733
Find a by Law of Cosines: 
a^2=b^2+c^2-2bc cos A
a^2=225+484-2(330) cos 45
=709-660(0.7071)=709-466.69=242.31
sqrt(242.31)=15.6 (rounded)
length of all 3 sides combined is 52.6 and half of it, 26.3, is s
sqrt(s*(s-a)(s-b)(s-c))=sqrt(26.3*11.3*4.3*10.7)=sqrt (13673.71)
=116.9 cm^2 (Hero's Formula)