Question

A rectangular courtyard 3.78 m long and 5.25 m wide is to be paved exactly with square tiles

Answer 1

Step-by-step explanation:

3.78 meters =378 cm = 2 × 3 × 3 × 3 × 7

5.25 meters=525 cm = 5 × 5 × 3 × 7

Hence common factors are 3 and 7

Hence LCM = 3 × 7 = 21

Hence largest size of square tiles that can be paved exactly with square tiles is 21 cm.

Number of times = area of rectangular tile/ are of square tiles

N = 378 * 525 / 21 ^2

N = 450 tiles.