Question: a hall 36 m long and 15 m broad is to be paved with stones , each measuring 3 dm by 5 dm . the number of stones required is :
A) 3600
B) 1800
C) 18
D) 18000
E) 1.8
Correct answer: a
Grade: 7 | Topic: Geometry | Difficulty: Hard | Standard: 7.G.B.6