The height of a triangle is twice the length of its base. The area of the triangle is 50 m2. Find the height and base to the nearest tenth of a meter.

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Step-by-step explanation:

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Answer:

Base = 7.1m

Height = 14.2m

Step-by-step explanation:

Let's take the base as 'x'.

And the height is twice the base so it is 2 × x which is 2x.

Then, the formula for finding area of a triangle is:

Area of a triangle = [tex]\frac{1}{2}[/tex] × base × height

From this equation we will be able to find the value of 'x'.

The area is 50 [tex]m^{2}[/tex]. Now substitute all the terms into the equation.

 50 =  [tex]\frac{1}{2}[/tex] × x ×  2x

 50 =  [tex]\frac{1}{2}[/tex] × [tex]2x^{2}[/tex]

 50 = [tex]\frac{2x^{2} }{2}[/tex]

The '2' in the numerator and denominator can be cut off.

 [tex]x^{2}[/tex] = 50

 x = [tex]\sqrt{50}[/tex]

 x = 7.07 = 7.1m ( to the nearest tenth )

So when the base is 7.07 the height, as mentioned, is twice of base, 2x. We have the value of x so just substitute the value of x in 2x.

 2 × 7.1 = 14.2m

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