Question

a sheet of paper measures 30cm by 20cm.a strip 4cm wide is cut from it all around. find the area of the remaining sheet and also the area of the strip cut out.​

Answer 1

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let ABCD denotes the rectangular sheet.

LENGTH OF THE SHEET = 30

BREADTH OF THE SHEET=20

:. AREA OF THE SHEET= LENGTH× BREADTH

= 30×20

=600CM^2

4 CM WIDE STRIP IS CUT FROM THE RECTANGULAR ALL AROUND ,THEN WE OBTAIN A RECTANGULAR SHEET ,PQRS HAVING

length= (30-(4+4))cm = 22cm

breadth=(20-(4+4))cm=12cm

:. area of the remaining sheet PQRS = (22×12)cm^2=264cm^2

area if strip cutout = area of sheet ABCD - area of sheet PQRS .

(600-264)cm^2

=336cm^2

Answer 2

Answer:

336cm^2

Step-by-step explanation:

et ABCD denotes the rectangular sheet.

LENGTH OF THE SHEET = 30

BREADTH OF THE SHEET=20

:. AREA OF THE SHEET= LENGTH× BREADTH

= 30×20

=600CM^2

4 CM WIDE STRIP IS CUT FROM THE RECTANGULAR ALL AROUND ,THEN WE OBTAIN A RECTANGULAR SHEET ,PQRS HAVING

length= (30-(4+4))cm = 22cm

breadth=(20-(4+4))cm=12cm

:. area of the remaining sheet PQRS = (22×12)cm^2=264cm^2

area if strip cutout = area of sheet ABCD - area of sheet PQRS .

(600-264)cm^2

=336cm^2