Question

a sheet of paper measures 50cm by 30cm. A strip 6cm wide is cut from all around.find area of the remaining sheet and also of the strip cut out

Answer 1

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$<b><i><font face=Copper black size=4 color=blue>$ Here is your answer.
Area of Sheet = L × B
= 50 × 30
= 1500 sq.cm

A Strip 6 cm wide is cut from all around so
Length of remaining sheet = 50 -6-6 = 38 cm
Breadth of remaining sheet = 30-6-6 = 18 cm

Area of remaining sheet = 38 × 18
= 684 sq.cm

Area of Strip cut out = 1500 - 684
= 816 sq.cm

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Answer 2

Here is your answer

Area of Sheet = 50× 30

= 1500 Square cm
Now

l = 50- 12 = 38
b = 30- 12 = 18

Area of remaining sheet = 38× 18.

= 684 Square cm

Area of Strip cut off = 1500 - 684

= 816 Square cm