The sun casts a shadow on a building and a flagpole. The building is 100 feet tall and its shadow is 25 feet. the flagpole of 5 feet. the two triangles shown are similar A: 10 feet
B: 20 feet
C: 40 feet
D: 80 feet

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)