Due to heavy flood in a state thousands were rendered homeless , 50 schools collectively offered to state government to provide place and the canvas for 1500 tents to be fixed . the lower part of each tent is cylindrical of radius 2.8 m and height 3.5 m with conical upper part of same radius and height 2.1 m .if the canvas used to make tents cost rs 120 per sq km , find the amount shared by each school to set up the tents?

1
Cost of canvas used to make tent will be 120 meter square and not 120 kilo meter square
Bcoz Tent Are Small They Can be Large Enough to Be Calculated At Kilo Meter Price

Answers

2016-03-21T16:30:47+05:30
Formulas Used :

1.Surface Area of Cylinder = 2 πrh 
2.Curved Surface area of Conical Upper Part  = π r l

Solution ⇒

1.Total Area of Each Tent (Cylinder) = 2 πrh
                                                             = 2 * 22/7 * 2.8* 3.5
                                                             = 2 * 22 * 0.4 * 3.5
                                                             = 17.6 * 3.5
                                                             = 61.6 m²

Area of Conical Upper Part (Cone) = π r l
                                                           = 22/7 * 2.8 * 2.1
                                                           = 22 * 0.4 * 2.1
                                                           = 8.8 * 2.1
                                                           = 18.48 m²

Area of 1500 tents = Area of Cylinder + Area of Cone
                                = 61.6 + 18.48
                                = 80.08 m²

Cost For Making Tent = Rs 120 per m²
Total Money Cost For Canvas = 120 * 80.08
                                                 = Rs 9609.60

Amount Shared By Each School = Total Amount / no . of School
                                                        = 9609.6 / 50
                                                        = Rs 192.19
                                                        = Rs 192.20 

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4 5 4
and not 2*pie*r*h
No its 2 * pie * r * h
Lawliets formula is correct
Mafty Whats Correct Answer???????
3 lakh something