Question

a cardboard metres 30 cm long and 20 cm wide a strip of 4 cm wide is cut from it all around find the area of remaining sheet and also the area of strip cut out

​

Answer 1

Step-by-step explanation:

30-4=26

20-4=16

area of inner box = 26×16

=416 metre square

area of outer box = 30×20

=600 metre square

area of strip = 600-416

area of strip = 600-416=184 metre square

area of strip = 600-416=184 metre squarearea of remaining sheet

area of strip = 600-416=184 metre squarearea of remaining sheet =416 metre square

Answer 2

After cutting 4cm strips from 2 opposite sides (longer sides),

length= 30cm

width=20-8= 12cm

After cutting 4cm strips from the next 2 sides (shorter sides),

length= 30-8= 22cm

Area of remaining part= l*b = 12*22 = 264 sq cm

Area of strips= 2(4*30)+2(4*12) = 240+96 = 336 sq cm

#BAL #answerwithquality