Question

9. What will be the change in the area of a rectangle when
(1) its length remains the same and its breadth becomes 2 times,
(1) its length becomes 3 times but its breadth remains the same.
(ii) its length and breadth both become 2 times.
(iv) its length becomes 2 times and breadth becomes half.
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Answer 1

Answer:

Step-by-step explanation:

1.(1)area gets doubled if length is doubled while breadth remains same. ... so area increases by 4 times.

2.1)area gets doubled if length is doubled while breadth remains same. as we can see 16 is double of 8. ... so area increases by 4 times.

3.1)area gets doubled if length is doubled while breadth remains same. as we can see 16 is double of 8. (2)same happens when breadth is doubled and length remain same.

4. Step-by-step explanation: Doubling one dimension would double the area, and taking half of one would half the area, doing both at the same time exactly cancels out. ... We now see that there is NO CHANGE in the area A of a rectangle if we double its length and also reduce its width by one-half.