Question

nu
The height of a triangle is 7 cm less its base and it's area is 9 sq cm find the height and base of the triangle
​

Answer 1

Answer:

let base be x and the height if x-7

Answer 2

Answer:

HEIGHT=2cm

Base=9 cm

Step-by-step explanation:

Let base be x cm

Then height = x-7 cm

Area of triangle = 1/2 × base × height

9 = 1/2 × x × (x-7)

18= x2 - 7x

x2-7x-18=0

x2-9x+2x-18=0

x(x-9)+2(x-9)=0

(x-9)(x+2)=0

Therefore, base= x =9

Then height = x-7=9-7 = 2cm