Question

The height of the triangle is 10 cm. It is decreased by 25%. Calculate the new height.​

Answer 1

Decreased height = 10 x
`(100 - 25)/(100)`

= 10 x
`(75)/(100)`

=
`(750)/(100)`

= 7.5 cm

Answer 2

7.5 cm

Explanation:

Decreased height = 25% of 10

`=(25)/(100)*10\\\\=0.25*10\\=2.5`

New height = 10 - 2.5 = 7.5 cm