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julia-pushkina [17]
3 years ago
9

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. I

f he had ridden directly to the pool, how much distance would he have saved? Round the answer to the nearest tenth of a mile.

Mathematics
2 answers:
Goshia [24]3 years ago
7 0

Answer:

1.8 miles

Step-by-step 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.

11Alexandr11 [23.1K]3 years ago
3 0

Answer:

1.8 miles

Step-by-step explanation:

For this case we can model the problem as a rectangle triangle.

 We know:

 Length of the sides of the triangle

 We want to know:

 Length of the hypotenuse

 Using the Pythagorean theorem we have:

 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 = 1.8 miles

 Answer:

 he would have saved:

 1.8 miles

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