30. A farmer wants to dig a well either in the form of cuboid of dimen

1.	30. A farmer wants to dig a well either in the form of cuboid of dimensions 1 m x 1 mx 7 m or inthe form of cylinder of diameter 1 m and 7 m deep. The rate to dig the well is 50/m3. Find the cost todig both wells
Answer» V of cuboidal well=lbh = 7 m^3Rate = 750 = 350 Rs. V of cylindrical well = 5.5m^3Rate = 5.550 = 275 Rs.

30. A farmer wants to dig a well either in the form of cuboid of dimensions 1 m x 1 mx 7 m or inthe form of cylinder of diameter 1 m and 7 m deep. The rate to dig the well is 50/m3. Find the cost todig both wells

Answer»

V of cuboidal well=lbh = 7 m^3Rate = 7*50 = 350 Rs.

V of cylindrical well = 5.5m^3Rate = 5.5*50 = 275 Rs.