The diameter of a cylindrical pillers is 24 cm and height is 3.5m. The cost of painting of the pillers is rupya 1.25per square meter then find the cost of painting 12 same pillers
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area to be painted = 2πrh
total = 24×2πrh
= 24×2×22/7×12×3.5
= 6336cm²
cost = 6336×1.25
= 7920rs ans .
total = 24×2πrh
= 24×2×22/7×12×3.5
= 6336cm²
cost = 6336×1.25
= 7920rs ans .
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Diameter =24cm
Radius =12cm
height =3.5m=350cm
Area to be painted =CSA of pillar
=2πrh
=2*22/7*12*350cm^2
=26400cm^2 =2.64m^2
one meter square for painting cost =₹1.25
2.64m^3 will cost=₹1.25*2.64=₹3.3
1pillar painting cost=₹3.3
12 pillar painting will cost =₹12*3.3=₹39.6
Radius =12cm
height =3.5m=350cm
Area to be painted =CSA of pillar
=2πrh
=2*22/7*12*350cm^2
=26400cm^2 =2.64m^2
one meter square for painting cost =₹1.25
2.64m^3 will cost=₹1.25*2.64=₹3.3
1pillar painting cost=₹3.3
12 pillar painting will cost =₹12*3.3=₹39.6
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