Stuck and would appreciate if someone can help answer this.

Question

Mike and Sandra Hallahan leave the seashore at the same time. Mike drives northward at a rate of 60 miles per hour, while Sandra drives west at 70 mph. Find how far apart they are after 4 hours to the nearest mile

Answer 1

Draw a line going northbound showing Mike’s direction and one going westbound showing Sandra direction.

In 4 hrs Mike will travel 60×4= 240 miles and

Sandra will travel 70×4=280 miles

These two directions can be shown by two legs of right triangle and a hypotenuse will be formed by connecting end points of these two legs.

Apply Pythagorean formula to determine the distance

between them. A^2 + A^2 = C^2

(240)^2 + (280)^2 = C^2

√136000. = C = 369 miles