Each triangle thingy is 12.5 because the base of the triangle is 5 and the height is also 5 which equals 25 and thennn you divide it by 2 since it’s a triangle, duh. and then since there are 4 triangles you multiply them 12.5 by 4 which is 50. and the square in the middle is base:5 base:5 which equals 25 and if you add 25 and 50 together you get answer: 75
