An oil drum is in the shape of a cylinder having the following dimensions : diameter is 2m and heights is 7 meters. The painter charges 3 per m2 to paint the drum. Then the total charges to be paid to the painter for 10 drums is

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

Rs.1508.50

Rs.1608.40

Rs.1507.40

Rs.1508.40

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Diameter of cylindrical drum = 2m; Radius = 1 m; Height = 7 m

TSA of cylindrical drum $= 2 π r (r + h) = 2 \times \frac{22}{7} \times 1 (1 + 7) = 50.28 s q . m$

Cost of painting per sq. m = Rs.3

Total cost of painting for 10 drum = 50.28 × 3 × 10 = Rs.1508.40

Watch 3-min video & get full concept clarity

JEE

NEET

Foundation JEE

Foundation NEET

CBSE