Multiply 18 * 3 and 20 * 3
18*3 = 54
20 * 3 = 60
Length = 54 cm ; Width = 60 cm
Area = L x W
54 * 60 = 3240
Area = 3240 cm
(7x2)+(2x w). Times 2 because you need each side and the opposite sides are the same size.
6x9 + 3^2pi would be the area so 54+9pi=57.14
Hi there friend:)
Your answer would be to add because 'gain" is the clue word to adding because it means adding on to something or means to have or get more of something added on, so when you add 5 + 0.25 you get 5.25, so 5 + 0.25 =
5.25
Sorry if its wrong
Have A Happy Thanks Giving With Family and Friends
Happy Holidays ^_^
-xoxo-
-Ans-