A rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5?

Related Mcqs:

1. A tank 3 m long, 2 m wide and 1.5 m deep is dug in a field 20 m long and 14 m wide. If the earth dug out is evenly spread out over the field, the level of the field will raise by nearly?

   A. 0.299 cm
   B. 0.29 cm
   C. 2.98 cm
   D. 4.15 cm

2. An agricultural field is in the form of a rectangle of length 20m and width 14m. A pit 6m long 3m wide and 2.5m deep is dug in a corner of the field and earth taken out of the pit is spread uniformly over. The remaining area of the field. The level of the field has raised by________?

   A. 15.16cm
   B. 16.17cm
   C. 17.18cm
   D. 18.19m

3. A rectangular tank measuring (5m x 4.5m x 2.1m) is dug in the center of the field measuring 13.5m x 2.5m. The earth dug out is speed every over the remaining portion of the field raised?

   A. 4m
   B. 4.1cm
   C. 4.2cm
   D. 4.3m

4. A plot of land in the form of a rectangle has dimensions 240m x 180m. A draint 10m wide is dug all around it on the outside and the earth dug out is evenly spread over the plot increasing its surface level by 25cm. The depth of the drailent of

   A. 1.227m
   B. 1.225m
   C. 1.233m
   D. 1.229m

5. The length of the rectangular field is double its width. Inside the field there is square shaped pond 8m long. If the area of the pond is 1/8 of the area of the field. What is the length of the field?

   A. 31 m
   B. 32 m
   C. 16 m
   D. 20 m

6. A man walked 20 m to cross a rectangular field diagonally. If the length of the field is 16 cm. Find the breadth of the field is________?

   A. 11 m
   B. 12 m
   C. 13 m
   D. 14 m

7. The length of a rectangular plot is thrice its breadth. If the area of the rectangular plot is 867 sq m, then what is the breadth of the rectangular plot?

   A. 8.5 m
   B. 17 m
   C. 34 m
   D. 51 m

8. The perimeter of circle field and a square field are equal. If the area of these square field is 12100m2, the area of a circular field will be_________?

   A. 15500Sq.m
   B. 15400Sq.m
   C. 15200Sq.m
   D. 15300Sq.m

9. What part of a ditch 48m long 16.5 broad and 4m deep can be filled by the earth got by digging a cylindrical tunnel of diameter 4m and length 56m?

   A. 1/9
   B. 2/9
   C. 7/9
   D. 8/9

10. A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of

    A. 120
    B. 260
    C. 240
    D. 220

    Submitted by: Shuaib Uddin