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Leo wants to paint a mural that covers a wall with an area of 800 square feet. The height of the wall is 1 /2 of its length. What is the length and the height of the wall?

Respuesta :

musiclover10045

Area. = length x height

Let x = Length

The height is 1/2x

800 = x * 1/2x

Simplify:

800 = 1/2x^2

Multiply both sides by 2:

1600 = x^2

Take the square root of both sides:

X = sqrt(1600)

X = 40

1/2x = 20

Length = 40 feet

Height = 20 feet

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