For the base it should be 5x5 which equals 25 sq cm. Then you need to do 5x9.7 which also equals 48.5. Then since it is a triangle you need to multiply is by 1/2 to get 24.25. Since there are four triangles multiply 24.25 by 4 to get 97. Finally add 25 to 97 to get 122. I hope this helped and plz inform me if it’s incorrect! :)
