The roof of a cabin is to be shingled at a cost of $70 a square. (a square, in shingling, is a region with an area of 100 sq. ft.) find the cost of shingling the roof shown, assuming the roof is symmetrical. $37.80 $378.00 $756.00

Just multiply 2 by (36*15) which equals 1080  than divide 1080 by 100  1080/100  which would give us 10.8 10.8 * 70 = $756.00so, the answer is  $756.00

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)