the height of a triangle is 4x inches and the base is (5x+1) inches. the area of the triangle is 500 square inches. what are the dimensions of the base and height of the triangle?

Respuesta :

Answer:

Height = 28 inches, Base = 36 inches

Step-by-step explanation:

Height of a triangle is 4x inches and the base is (5x+1) inches.

Area of the triangle is given as 500 square inches.

We have to calculate the dimensions of the triangle.

Since area of a triangle = (1/2)×Base×height = 500

(1/2)×(4x)×(5x+1) = 500

2x(5x+1) = 500

x(5x+1) = 250

5x² + x - 250 = 0

[tex]x=\frac{-1\pm \sqrt{1+20\times 250}}{2\times 5}[/tex]

[tex]=\frac{-1\pm \sqrt{5001}}{10}=\frac{-1\pm 70.72}{10}[/tex]

x = 7

Therefore height = 4x = 28 inches

Base = (5x + 1) = 35+1 = 36 inches.