Question

6. The length of a rectangle is 20% more than its breadth. What will be the ratio of the area of a rectangle to that of a square whose side is equal to the breadth of the rectangle? 7. How many envelopes can be made out of a sheet of paper 125 cm by 85 cm; supposing one envelope requires a piece of paper of size 17 cm by 5 cm? ​

Answer 1

Answer:

$.$

"Let x units be the length and y units be the bredth

of a rectangle. Its area is x.y sq. units.

New length =x+20%of x=6x/5 units.

New bredth =y-20% of y=4y/5 units.

New area =6x×4y/5×5= 24xy/25 sq.units

Area reduce =xy-24xy/25= xy/25

Area reduce in % =(xy/25)×100×1/xy = 4% ,Answer. "

Answer 2

$\bold{ANSWER≈}$

"Let x units be the length and y units be the bredth

of a rectangle. Its area is x.y sq. units.

New length =x+20%of x=6x/5 units.

New bredth =y-20% of y=4y/5 units.

New area =6x×4y/5×5= 24xy/25 sq.units

Area reduce =xy-24xy/25= xy/25

Area reduce in % =(xy/25)×100×1/xy = 4% ,Answer. "