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22-03-2019
Mathematics

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Find the missing length. Round to the nearest tenth, if necessary.

A. 441
B. 22.5
C. 64
D. 19.4

Find the missing length Round to the nearest tenth if necessary A 441 B 225 C 64 D 194 class=

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musiclover10045 musiclover10045

22-03-2019

Using the Pythagorean theorem:

21^2 = √(8^2 + x^2)

441 = √( 64 + x)

441 - 64 = √x

377 = √x

x = √377

x = 19.4

The answer is D.

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