Question

Alvin drives 12 km due south from town A to town B, and then drives 72 km due east to town C. Finally, he 12 km drives 18 km due south to town D. Find the distance between town A and town D.

((please help,,​

Answer 1

78 km

Explanation:

Redraw diagram. (See pic)

Use Pythagoras to find distance

`y = \sqrt{ {30}^(2) + {72}^(2) }`

`y = 78`