Find the cost of painting cylindrical pillar of radius 7cm and height 0.1m at the rate of Rs. 20 per square cm, also find volume of cement used to build it.
Answers
Answered by
1
Answer:
Cost of painting = Rs. 8800
Volume of cement = 3080 cm3
Step-by-step explanation:
r = 7cm
h= 0.1m=10cm
CSA OF cylinder = 2π x rh
= 2 x 22/7 x 7 x 10
= 440 cm2
cost per cm² = 20
cost for 440cm²= 440*20= Rs. 8800
Volume of cement = volume of cylinder
= πr2h
= 22/7 x 7 x 7 x 10
= 3080 cm3
Hope it may help you!!
Mark my answer as the brainliest if you find it helpful...
Similar questions