surface area = 5ab +5bh
a = 4
b=7
h=18
5*4*7 = 140
5*7*18 = 630
630+140 = 770 square meters
6(1.15) + 3.75 + 7.45 + 13(1.15) + 3(37) =
6.90 + 3.75 + 7.45 + 14.95 + 111 =
144.05 <== total bill
The Least Common Multiple (LCM) of some numbers is the smallest number that the numbers are factors of. Like the LCM of 3 and 4 is 12, because 12 is the smallest number that 3 and 4 are both factors for.