A sheet of paper measure 30cm by 20cm. A strip 4cm wide cut out from it all around. Find the area of remaining sheet and also the area of strip cut out.
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Answered by
53
Are of the sheet before the strip was cut.
lenght=30 breadth=20
so area =l*b
=30*20=600cm^2
After cutting 4 cm strip the
length and the breadth will decrease by 8 units (4 units from each side)
So,new length will length=22 and breadth=12
So area =22*12 =264cm^2
Now area of the strip which is cut out
will be =Area before cutting the paper -Area after cutting the paper
=600-264
=336cm^2
Plzz mark it brainliest if you like!!!!
lenght=30 breadth=20
so area =l*b
=30*20=600cm^2
After cutting 4 cm strip the
length and the breadth will decrease by 8 units (4 units from each side)
So,new length will length=22 and breadth=12
So area =22*12 =264cm^2
Now area of the strip which is cut out
will be =Area before cutting the paper -Area after cutting the paper
=600-264
=336cm^2
Plzz mark it brainliest if you like!!!!
1Gautam1:
Thank you
After cuttin 4cm strip how the length and breadth decrease by 8units ,
I didn't understood .
Take a paper if you cut 4 cm from top and 4 cm from bottom the breadth will decrease by 4+4 =8 units
Take a paper if you cut 4 cm from left and 4 cm from right the length will decrease by 4+4 =8 units
so both length and breadth decrease by 8 units
Oh yes, i understood
thanks
Answered by
28
length of sheet =30
breadth of sheet =20
area of rectangle =l*b
30*20
600
length =30-(4+4)=22
breadth =20-(4+4)=12
area of remaining sheet =22*12=264
so area of remaining sheet =600-264=336
breadth of sheet =20
area of rectangle =l*b
30*20
600
length =30-(4+4)=22
breadth =20-(4+4)=12
area of remaining sheet =22*12=264
so area of remaining sheet =600-264=336
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