Answers

2016-01-23T20:25:59+05:30
2016-01-23T20:29:10+05:30
Area of walls and bottom = 2(lb+bh+hl) - lb   [subtracted top area from total surface area]
= 2*(30*9 + 9*4 + 4*30) - 30*9
= 2*(270 + 36 + 120) - 270
= 2*(426) - 270
= 852 - 270
= 582m^{2}
cost = Rs.(1/4 * 582)
= Rs.145.5
0