Question

a room is 25 m long and 15 m wide a square carpet of side 9 m is laid on the floor find the area of the floor which is not carpeted​

Answer 1

Answer:

$= 294 \: {m}^{2} .$

Step-by-step explanation:

$required \:a rea = (25 \times 15) - (9 \times 9) \\ \\ = (20 + 5)(20 - 5) - {(10 - 1)}^{2} \\ \\ = 400 - 25 - (100 + 1 - 20) \\ \\ = 375 - (80 + 1) \\ \\ = 375 - 81 \\ \\ = 294 \: {m}^{2} .$