Question

9. What happens to the area of a rectangle when
(i) its length is doubled, the breadth remaining
the same?
(ii) its breadth is doubled, the length remaining
the same?
P(iii) its length and breadth are both doubled?
of a square when
fu
1​

Answer 1

Answer: (1)area gets doubled if length is doubled while breadth remains same.

For eg let length be 2 and breadth be 4

area = L×B= 2×4=8

AFTER LENGTH IS DOUBLED

L=2×2=4,B=4

area=4×4=16

as we can see 16 is double of 8.

(2)same happens when breadth is doubled and length remain same.

(3) double the length and breadth

L=2×2=4,B= 4×4=16

area=16×4=64

so area increases by 4 times.

Answer 2

area increases for 4 times