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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,,​

Alvin drives 12 km due south from town A to town B, and then drives 72 km due east-example-1
User Doboy
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1 Answer

5 votes

Answer:

78 km

Explanation:

Redraw diagram. (See pic)

Use Pythagoras to find distance


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


y = 78

Alvin drives 12 km due south from town A to town B, and then drives 72 km due east-example-1
User TypedSource
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