LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
in Mathematics by (3.5k points)

A lead pencil consists of a cylinder of wood with solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the graphite. [ Assume π = 22/7 ]

1 Answer

0 votes
by (5.8k points)
selected by
Best answer

Radius (r2) of graphite = 91/2) mm = (0.1/2 0 cm = 0.05 cm

Height (h) of pencil = 14 cm

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.