$3 per round. Her 2nd favorite game is the baseball throw, which costs $1 per round. Can she afford to play 7 rounds of the ball and 3 rounds of the baseball throw ? Justify your answer.

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.