Sarthaks Test
+1 vote
in Mathematics by (7.9k points)

The slant height of the frustum of a cone is 4cm and perimeters of it circular ends are 18cm and 6cm. find curved surface of the frustum?

1 Answer

+1 vote
by (13.1k points)
selected by
Best answer

Given slant height of cone (r) = 4cm

Let radii of top and bottom circles be r1 and r2

Given perimeters of its ends as 18cm and 6cm

Curved surface area of frustum cone 

Curved surface area of frustum cone = 48cm2

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.