Question

If the base of a triangle is doubled and the corresponding altitude is tripled ..find the ratio of the new area to the previous area.

Answer 1

Hello Dear!!! : )

Here Is The Answer:

Let The Base Be 12 cm And Corresponding Altitude Be 6 cm

So, The Previous Area = 1 / 2 x b x h

= 1 / 2 x 12 x 6

= 12 x 6 / 2

= 72 / 2

= 36 cm^2

Doubled Base => 12 x 2 = 36 cm

Tripled Altitude => 6 x 3 = 18 cm

So, The New Area = 1 / 2 x 36 x 18

= 36 x 18 / 2

= 324 cm^2

Ratio => 324 : 36

=> 9 : 1

Hope It Helps You!!!

Have A Nice Day!!!

Answer 2

Answer:

upper one is correct and I think it is best answer