Question 2 - Frustum of a cone - Area - Chapter 12 Class 10 Surface Areas and Volumes

Last updated at Dec. 13, 2024 by

Ex 13.4, 2 - The slant height of a frustum of a cone is 4 cm - Frustum of a cone - Area

Ex 13.4, 2 - Chapter 13 Class 10 Surface Areas and Volumes - Part 2

Go Ad-free

Transcript

Question 2 The slant height of a frustum of a cone is 4 cm and the perimeters (circumference) of its circular ends are 18 cm and 6 cm. Find the curved surface area of the frustum. We know that Curved surface area of frustum = ( 1+ 2) Here l = 4 cm We need to find r1 & r2 Now, Curved surface area of frustum = ( 1+ 2) = (9/ +3/ ) 4 = ((9 + 3)/ ) 4 = 12/ 4 = 48 cm2 Hence, curved surface area of frustum = 48 cm2

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo