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Ne4ueva [31]
3 years ago
5

The information given represents lengths of sides of a right triangle with c the hypotenuse. Find the correct missing length to

the nearest hundredth. A calculator may be helpful.
a = ?, b = 13, c = 21
a 15.83
b 15.87
c 16.19
d 16.49
Mathematics
2 answers:
Fed [463]3 years ago
7 0
A = ?, b = 13, c = 21
21^2=a^2+13^2
441=a^2+169
441-169=a^2
272=a^2 taking sqrt on both sides 
=16.49
option d is right
hope this helps
klasskru [66]3 years ago
5 0
A² = c² - b²
a² = 21² - 13 ²
a² = 441 - 169
a² = 272
a = √272 = 16.49242 ≈ 16.49
Answer : D ) 16.49
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