Question

A man goes 9 km in east then 12 km due south. how far is he from the starting point.
1- 15 km
2- 6 km
3- 7 km
4- 12 km

Answer 1

Answer:

15km

Step-by-step explanation:

the man forms a right triangle with two sides 9 and 12

we need to find the hypotenuse

12^2+9^2=x^2

x^2=225

x=15

Answer 2

Answer:

15 km is right answer.

let ABC is right angled triangle at B and AB is equal to 12km and BC is 9km then AC^2 is equal to

${9}^{2} + {12}^{2}$