Fewpal
+1 vote
650 views
in Mathematics by (29.7k points)

It is required to make a closed cylindrical tank of height 1 m and base diameter 140 cm from a metal sheet. How many square metres of the sheet are required for the same?.

1 Answer

+1 vote
by (127k points)
selected by
 
Best answer

Here, h = 1 m, r = 140/ 2 cm = 70 cm = 0.7 m 

Total surface area of the cylinder = 2πr (h + r) 

= 2 × 22/ 7 × 0.7 (1 + 0.7) m2 

= 44 × 0.1 × 1.7 m2 = 7.48 m2 

Hence, 7.48 m2 of sheet is required Ans.

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

...