# The front of an​ a-frame cabin in a national park is in the shape of a​ triangle, with an area of

The front of an​ a-frame cabin in a national park is in the shape of a​ triangle, with an area of 248 ft. if the height is 1 ft less than twice the​ base, find the base and the height of the front of the cabin.

## This Post Has 3 Comments

1. Expert says:

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2. Expert says:

the length of o'p' is $1.5\times op$.

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

$k=\frac{o'p'}{op}$

the scale factor is 1.5.

$1.5=\frac{o'p'}{op}$

multiply both sides by op.

$1.5\times op=o'p'$

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is $1.5\times op$.

3. AvantiA says:

Area of triangle=1/2bh
Area=248ft
Base=x
Height=2x-1
248=1/2×x×(2x-1)