Question

Two circular cylinders are formed by rolling two rectangular aluminum sheets
each of dimensions 12 m length and 5 m breadth, one by rolling along its length
and the other along its width. Find the ratio of their curved surface areas.

Answer 1

Answer:

hey mate

Step-by-step explanation:

one cylinder will be of 12 m length and 5 m circumference.

=> curved surface= circumference× length

= 5×12 = 60m²

similarly other cylinder will be of 5 m length and 13 m circumference.

=> curved surface= 12×5= 60 m²

thus ratios are 1 : 1

NOTE:- IN BOTH CASES WE SEE THAT CURVED

SURFACE AREA = AREA OF RECTANGULAR

SHEET. THUS IN THIS TYPES OF QUESTION

WE NEED NOT TO CALCULATE THE CURVED

SURFACE BUT IT CALCULATED BY THE AREA OF

RECTANGULAR MATERIAL