Question

mara ran 3 km north and then 4 km east. she will finish her run by running directly home. what was the total distance of her run? 4 km 3 km x mara’s house 5 km 7 km 12 km 14 km

Explanation:

Step1: Find the length of X using Pythagorean theorem

The triangle is a right triangle with legs 3 km and 4 km. By Pythagorean theorem, \( X = \sqrt{3^2 + 4^2} = \sqrt{9 + 16} = \sqrt{25} = 5 \) km.

Step2: Calculate total distance

Mara ran 3 km, then 4 km, then 5 km. Total distance = \( 3 + 4 + 5 = 12 \) km.

Answer:

12 km