Question

4. Find the least number of square tiles that can be paved on the floor whose length is 120 m and
breadth is 84 m
(A) 40
(B) 50
(C) 60
(D) 70​

Answer 1

Answer:

option D

Step-by-step explanation:

length=120 m

breadth=84 m

Area of the room= length × breadth

                            =120 m × 84 m

                            =10080 m²

length of square tile= HCF [120,84]=12

area of square tile=(side)²

                              =12 m²

                              =144 m²

So, the number of tiles=10080 m² ÷ 144 m²

                                     =70