If s = 1 over 4 unit and a = 80s2, what is the value of a, in square units?

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

What else equals 42 and 30 for multiply

The floor of a building consists of 3000 tiles which are rhombus shaped and each of it's diagonals are 45 cm and 30 cm in length. find the total cost of polishing the floor, if the cost per m² is rs. 4.