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In the diagram below, BC is an altitude of ABD. To the nearest whole unit, what is the length of CD?

In the diagram below, BC is an altitude of ABD. To the nearest whole unit, what is-example-1
User Teemu
by
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1 Answer

16 votes
16 votes

Answer:

B. 23

Explanation:

BC = 32

CA = 44

To find the length of CD, apply the altitude of right triangle formula, (altitude-on-hypotenuse theorem) which is given as:

h = √(xy)

Where,

h = CB = 32

x = CA = 44

y = CD = ?

Plug in the values

32 = √(44 × CD)

Square both sides

32² = 44 × CD

1,024 = 44 × CD

Divide both sides by 44

1,024/44 = CD

CD = 23 units (nearest whole unit)

User Juuro
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