1. 6sqrt(12000
2. 6sqrt(1000)
3. 4sqrt(12000)
4. 3sqrt(120000)
6sqrt(12000
1. 3 3/7
2. 2 5/2
3. 4 5/6
4. none of these
3 3/7
1. 2 hours
2. 1.5 hours
3. 3 hours
4. 4 hours
1.5 hours
1. 392
2. 350
3. 25
4. 36
392
1. 7.05
2. 8.05
3. 10.10
4. 5.07
7.05
1. 30;40
2. 40;30
3. 20;40
4. 30;60
40;30
1. 90
2. 100
3. 200
4. 400
100
1. 45;60
2. 30;40
3. 50;60
4. 60;45
60;45
1. 200
2. 300
3. 400
4. 100
100
1. (a2+8)(a2-8)
2. (a2+2)(a2-2)
3. (a2+4a+8)(a2-4a+8)
4. None of these
(a2+2)(a2-2)