Question

what will be the change in the area of rectangle if length and breadth are thrice

Answer 1

lets assume that

length=2cm

breadth=2cm

are=l*b=2*2=4cm sq

now the l and b will get thrice

length=6 cm

breadth=6 cm

area=6*6=36 cm sq

from this we conclude that the area we get 9 times

pls pls pls mark as brainliest

Answer 2

LET ME EXPLAIN YOU
__________
|_________ |
here,length is 10 lines ,breadth is 1 line
so now thrice means length = 10*3=30 and breath is 1*3=3 so
________________________________
| |
| |
| _______________________________|
so u can observe the change
it means the change is in ratio of 3:1