A courtyard is 18 meter long and 12 meter board is to be paved with bricks of dimensions 12 cm by 6 cm. The total number of bricks required is :	Choose the correct choice:
A) 16000
B) 18000
C) 20000
D) 30000
E) None of these
Explanation:   Number of bricks =Courtyard area /1 brick area   =(1800Ã—1200 /12Ã—6)=30000   Option 30000
<result>D</result>
A courtyard is 18 meter long and 12 meter board is to be paved with bricks of dimensions 12 cm by 6 cm. The total number of bricks required is :