Question

What happens to the area of a rectangle when (a) it's length is doubled, the breadth remaining same (b) it's breadth is doubled the length remaining the same (c) it's length and breadth are both doubled

Answer 1

(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.

hope it helps you.
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Answer 2

(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 so area increases by 4 times.

area = 16 * 4 = 64

hope it helps you.

Mark it as a brainliest