Question

heigth of thr triangle decrease by 40 persent and base increase by 40persent what will be persent chang its area​

Answer 1

Answer:

Step-by-step explanation:

hope it will help yu

Answer 2

Answer:

16 %

Step-by-step explanation:

area of triangle = 1/2 bh

h is decreased by 40 % =  h - h  ( 40 / 100 )

                                        = 6h / 10

b is increased by 40 % = b + b ( 40 / 100 )

                                       = 14 b / 10

 

 new  area = (  6h / 10 * 14 b /10 ) 1/2

             =  84 /100 bh

change in  % is 100 - 84 = 16