Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
1.5k views
in Mensuration by (41.9k points)
closed by

An oil drum is in the shape of cylinder, whose diameter is 2 m and height is 7 m. The painter charges ? ₹ 5 per m2 to paint the drum. Find the total charges to be paid to the painter for 10 drums.

1 Answer

+1 vote
by (41.6k points)
selected by
 
Best answer

It is given that diameter of the (oil drum) cylinder = 2 m. 

Radius of cylinder = \(\frac{d}{2}=\frac{2}{2}\) = 1 m. 

Total surface area of a cylindrical drum 

= 2πr(r + h) 

= 2 × \(\frac{22}{7}\) × 1(1 + 7) 

= 2 × \(\frac{22}{7}\) × 8 = \(\frac{352}{7}\)m2 = 50.28 m2

So, the total surface area of a drum = 50.28 m2 

Painting charge per 1 m2 = ₹ 5. 

Cost of painting of 10 drums

= 50.28 × 5 × 10 

= ₹ 2514

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...