We know that 1 cm equals 70 m, so we first multiply 5.8 by 70 which equals 406. Then we multiply 406 by 2 since the side opposite to that side is equal. 406x2=812. Now me multiply again by 70 except with 7.6: 7.6x70=532. Now we multiply 532 by 2 since again, the side opposite to that is equal: 532x2=1064. Now that we have our final totals, 1064 and 812, we add them together to get our final answer, 1,876 meters.