Question

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?

Answer 1

This was the question that had come in Class X Board 2016 today.
Answer -

CSA of Cylinder = 2*22/7*2.8*3.5 = 61.6 sq. cm

Slant Height of Cone = $\sqrt{(2.8)^{2} +(2.1)^{2}}$ = $\sqrt{x} 12.25$ = 3.5 cm
Hence, CSA of Cone = 22/7*2.8*3.5 = 30.8 sq. cm

Total Area of 1 Tent = 61.6 + 30.8 = 92.4 sq. cm
Rate of Canvas = ₹120 per sq.  metre
Number of Tents = 1500
Number of School to share the cost = 50
Hence, the amount contributed by each school = [1500/50]*[120*92.4] = ₹332640

Value - Humanitarian & Proactive efforts are shown by students and teachers :P
Hope this helps... 

Answer 2

Answer:

This was the question that had come in Class X Board 2016 today.

Answer -

CSA of Cylinder = 2*22/7*2.8*3.5 = 61.6 sq. cm

Slant Height of Cone =  =  = 3.5 cm

Hence, CSA of Cone = 22/7*2.8*3.5 = 30.8 sq. cm

Total Area of 1 Tent = 61.6 + 30.8 = 92.4 sq. cm

Rate of Canvas = ₹120 per sq.  metre

Number of Tents = 1500

Number of School to share the cost = 50

Hence, the amount contributed by each school = [1500/50]*[120*92.4] = ₹332640

Value - Humanitarian & Proactive efforts are shown by students and teachers :P

Hope this helps...