A boat is 84 feet from the base of cliff. If the distance from the top of the cliff to the boat is 21 less than twice the height of the cliff to the water. Find the height of the cliff. Round to the nearest tenth of a foot if necessary.
A) 63 ft
B) 49 ft
C) 35 ft
D) 105 ft

Question

Quizplus · Accepted Answer

The distance from the top of the cliff to the boat is 21 less than twice the height of the cliff to the water. So, the height of the cliff is (84 + 21) / 2 = 63 feet.

A Boat Is 84 Feet from the Base of Cliff