Question

Keith left his house, rode his bike 3 miles along one road, took a 90 degree turn, and rode 3 miles to the local swimming pool. If he had ridden directly to the pool, how much distance would he have saved? Round the answer to the nearest tenth of a mile. A right triangle. The distance from the angle with measure 90 degrees to Keith's pool is 3 miles, and the distance to the pool is 3 miles. 1.2 miles 1.8 miles 2.5 miles 4.2 miles

Answer 1

Answer:

1.8 miles

Explanation:

Considering rectangle triangle as a model for this problem

We know:  

Length of the sides of the triangle

In order to find length of the hypotenuse, we'll use Pythagorean theorem

$d=\sqrt{3^{2} +3^{2} }\\d = \sqrt{2(3^2)} \\d = 3\sqrt{2} \\d = 4.2 miles$

Then, the distance that he would have saved if he travels directly is:

3 + 3 - 4.2 = 1.8miles.

Therefore, he would have saved 1.8miles.

Answer 2

Answer:

1.8

Explanation:

Let's figure out the total distance he has actually ridden: 3 + 3 = 6 miles.

Now, let's draw this out (see attachment). Notice that if Keith rode his bike directly to the pool, we'd have a right triangle with legs 3 and 3 and with the hypotenuse as the direct path.

Use the Pythagorean Theorem to figure out the hypotenuse length:

c = √(3² + 3²) = √(9 + 9) = √18 = 3√2 ≈ 4.2 miles

Subtract this from 6:

6 - 4.2 = 1.8

The answer is 1.8 miles.