questions no1 and question no 2
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1. The area of top = 154
The radius = r = [(154*7)/22]^1/2 = 7 units
The CSA of cylinder = 880
The height of cylinder = (880*7)/(7*2*22) = 20 units..
2. let the breadth be x
The length = 3x/2
The rate of carpeting 1m^2 = 38.5
The rate = 924
The area = 924/38.5 = 24 m^2
Given,
x*3x/2 = 24
or, x^2 = 24*2/3
or, x = 4
The breadth = 4m
The length = 6m
Let the height be h m
The rate of painting 1 m^2 = 5.5
The cost = 1320
The area painted = 1320/5.5 = 240
Given,
2h(4+6) = 240
or, h = 240/(10*2)
or, h = 12.
The dimensions are 6*4*12 metres
The radius = r = [(154*7)/22]^1/2 = 7 units
The CSA of cylinder = 880
The height of cylinder = (880*7)/(7*2*22) = 20 units..
2. let the breadth be x
The length = 3x/2
The rate of carpeting 1m^2 = 38.5
The rate = 924
The area = 924/38.5 = 24 m^2
Given,
x*3x/2 = 24
or, x^2 = 24*2/3
or, x = 4
The breadth = 4m
The length = 6m
Let the height be h m
The rate of painting 1 m^2 = 5.5
The cost = 1320
The area painted = 1320/5.5 = 240
Given,
2h(4+6) = 240
or, h = 240/(10*2)
or, h = 12.
The dimensions are 6*4*12 metres
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