Answer:
First find the area of the square
(s x s)
10x10
=100
And then for the triangles
(1/2bh)
1/2 x 10 x 12
=60
since there are 4 triangles of the same area we will multiply 4 with the first triangle's area
60 x 4
=240
Total S.A= 240 + 100
=340 Square Inches
Option B
Hope it helps!
