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creativ13 [48]
3 years ago
14

Jaquira wanted to set a ladder against the house to change a light above the garage. The ladder was 19 feet long, and reached th

e light, which was 7 feet above the ground. What was the distance from the base of the ladder to the house? Round to the nearest tenth.

Mathematics
1 answer:
Firlakuza [10]3 years ago
6 0

Answer: 17.7\ feet

Step-by-step explanation:

Draw a right triangle as the one shown attached.

In order to calculate the distance from the base of the ladder to the house, you can use the Pythagorean Theorem:

a^2=b^2+c^2

Where "a" is the hypotenuse and "b" and "c" are the legs of the triangle.

Solving for one of the legs:

b=\sqrt{a^2-c^2}

You can notice that:

a=19\ ft\\c=7\ ft\\b=x

Therefore, substituting values into b=\sqrt{a^2-c^2}, you get that the distance from the base of the ladder to the house, rounded to the nearest tenth, is:

x=\sqrt{(19\ ft)^2-(7\ ft)^2}\\\\x=17.7\ ft

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