19. A field is 30 m long and 18 m broad. A pit 6Tmlong, 4 m wide and 3

1.	19. A field is 30 m long and 18 m broad. A pit 6Tmlong, 4 m wide and 3 m deep, is dug out frothe middle of the field and the earth removedevenly spread over the remaining area to the field.Find the rise in the level of the remaining partof the field in centimetres correct to one decimalplace.is(ICSE)
Answer» Volume = 6 * 4 3 m^3= 72m^3Area of Pit = 64=24m^2Area of field=3018=540m^2Remaining area = (540-24)=516m^2 Rise in level = 72100/516= 13.95cm

19. A field is 30 m long and 18 m broad. A pit 6Tmlong, 4 m wide and 3 m deep, is dug out frothe middle of the field and the earth removedevenly spread over the remaining area to the field.Find the rise in the level of the remaining partof the field in centimetres correct to one decimalplace.is(ICSE)

Answer»

Volume = 6 * 4 *3 m^3= 72m^3Area of Pit = 6*4=24m^2Area of field=30*18=540m^2Remaining area = (540-24)=516m^2

Rise in level = 72*100/516= 13.95cm