Math, asked by sandeep232, 1 year ago

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


sandeep232: slove

Answers

Answered by Abhishek63715
0
area to be painted = 2πrh
total = 24×2πrh
= 24×2×22/7×12×3.5
= 6336cm²
cost = 6336×1.25
= 7920rs ans .
Answered by Abhay629725426
2
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
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