Question: answer with explanation 3. A drilling rig 22 km offshore is to be connected to a refinery onshore, 38 km down the coast from the

answer with explanation

3. A drilling rig 22 km offshore is to be connected to a refinery onshore, 38 km down the coast from the rig as illustrated. If underwater pipe costs $25 000 per km and underground pipe costs $18 000 per km, how far down the coast should the underwater pipe be routed to give the least expensive connection? [5] Rig Water 22 km Refinery Land 38 km

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