Question

If the length is increased by 4 times and the breadth is decreased by half. Find the change in the area.​

Answer 1

Answer:

2 times

Step-by-step explanation:

new length is 4 l

new breadth is 1/2 b

new area= 4 lx 1/2 b

2 (l x b )

new area is 2 times

Answer 2

Answer:

Area becomes 2 times when the length is increased by 4times and breadth is decreased by half .

Step-by-step explanation:

Let the length be l .

and the breadth be b .

Area = l × b

= lb

Now,

when length is increased by 4times and breadth is decreased by half .

So,

new length = 4l

new breadth = b/2

New area = 4l × b/2

= 2l × b

= 2lb

Hence,

Area becomes 2 times when the length is increased by 4times and breadth is decreased by half .

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