A rectangle has an area of 315 cm² . If the length is increased by 2 cm and the width is
1 answer:
Answer:
Let the breadth be x and the length be y .
Original area =x.y
Now
length=y+2
breadth=x-2
Area=x.y-28 or x-2 × y+2
xy-28=(x-2)(y+2)
xy-28=xy+2x-2y-4
2y-2x=24
y-x=12
y=12+x
length=y-1
breadth=x+2
Area=xy+33 or (x+2)(y-1)
xy+33=(x+2)(y-1)
xy+33=xy-x+2y-2
35=2y-x
2y=35+x
y=(35+x)÷2
12+x=(35+x)÷2
24+2x=35+x
x=35-24
x=11
y=23
Therefore length is 23cm and breadth is 11cm
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Answer:
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Step-by-step explanation:
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Step-by-step explanation:
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Answer:
1= A
2= C
Step-by-step explanation:
I think this is right I'm not sure but I think it is.
hope this helps :)